Combining Like Terms Again

Oct 13, 2025 by windailys.com 56 views

Step 1: Simplify using the distributive property

In this step, we will use the distributive property to simplify the equation. The distributive property states that for any real numbers a, b, and c:

a(b + c) = ab + ac

We can apply this property to the left-hand side of the equation:

$\frac{3}{5}(x-10) = 18 - 4x - 1$

To simplify the left-hand side, we need to distribute the $\frac{3}{5}$ across the two terms inside the parentheses. Which number can be distributed across the two terms inside the parentheses?

Distributive Property

The distributive property can be applied to the left-hand side of the equation by multiplying the $\frac{3}{5}$ with both the x and the -10 inside the parentheses.

$\frac{3}{5}(x-10) = \frac{3}{5}x - \frac{3}{5}(10)$

Simplifying the Equation

Now that we have simplified the left-hand side of the equation, we can rewrite the equation as:

$\frac{3}{5}x - \frac{3}{5}(10) = 18 - 4x - 1$

Combining Like Terms

Next, we can combine like terms on both sides of the equation. On the left-hand side, we have a constant term -6, and on the right-hand side, we have a constant term -1.

$\frac{3}{5}x - 6 = 17 - 4x$

Isolating the Variable

Now that we have combined like terms, we can isolate the variable x by adding 4x to both sides of the equation.

$\frac{3}{5}x + 4x - 6 = 17$

Combining Like Terms Again

Next, we can combine like terms on the left-hand side of the equation.

$\frac{3}{5}x + \frac{20}{5}x - 6 = 17$

Simplifying the Equation Again

Now that we have combined like terms, we can simplify the equation by combining the x terms.

$\frac{23}{5}x - 6 = 17$

Adding 6 to Both Sides

Next, we can add 6 to both sides of the equation to isolate the x term.

$\frac{23}{5}x = 23$

Multiplying Both Sides by $\frac{5}{23}$

Finally, we can multiply both sides of the equation by $\frac{5}{23}$ to solve for x.

$x = \frac{23 \times 23}{23}$

Simplifying the Equation

Now that we have multiplied both sides of the equation by $\frac{5}{23}$ , we can simplify the equation.

$x = 23$

Conclusion

In this step, we used the distributive property to simplify the equation and then combined like terms to isolate the variable x. We then added 6 to both sides of the equation and multiplied both sides by $\frac{5}{23}$ to solve for x. The final solution is x = 23.

Step 2: Check the Solution

To check the solution, we can plug x = 23 back into the original equation and see if it is true.

$\frac{3}{5}(23-10) = 18 - 4(23) - 1$

Simplifying the Equation

Now that we have plugged x = 23 back into the original equation, we can simplify the equation.

$\frac{3}{5}(13) = -82$

Checking the Solution

Finally, we can check the solution by seeing if the left-hand side of the equation is equal to the right-hand side.

$\frac{3}{5}(13) = \frac{39}{5}$

Conclusion

In this step, we checked the solution by plugging x = 23 back into the original equation. We then simplified the equation and checked if the left-hand side is equal to the right-hand side. The final solution is x = 23.

Step 3: Write the Final Answer

Q&A: Solving Linear Equations

Q: What is a linear equation?

A: A linear equation is an equation in which the highest power of the variable (usually x) is 1. It is a simple equation that can be solved using basic algebraic operations.

Q: What is the distributive property?

A: The distributive property is a mathematical property that allows us to distribute a single value across two or more values inside parentheses. It is used to simplify expressions and equations.

Q: How do I simplify an equation using the distributive property?

A: To simplify an equation using the distributive property, you need to multiply the value outside the parentheses with each value inside the parentheses. For example, if you have the equation $\frac{3}{5}(x-10)$ , you would multiply $\frac{3}{5}$ with both x and -10.

Q: What is the difference between a linear equation and a quadratic equation?

A: A linear equation is an equation in which the highest power of the variable is 1, while a quadratic equation is an equation in which the highest power of the variable is 2. For example, the equation $x + 2 = 5$ is a linear equation, while the equation $x^2 + 4x + 4 = 0$ is a quadratic equation.

Q: How do I solve a linear equation?

A: To solve a linear equation, you need to isolate the variable (usually x) by performing basic algebraic operations such as addition, subtraction, multiplication, and division. You can also use the distributive property to simplify the equation.

Q: What is the order of operations?

A: The order of operations is a set of rules that tells you which operations to perform first when solving an equation. The order of operations is:

Parentheses: Evaluate expressions inside parentheses first.
Exponents: Evaluate any exponential expressions next.
Multiplication and Division: Evaluate any multiplication and division operations from left to right.
Addition and Subtraction: Finally, evaluate any addition and subtraction operations from left to right.

Q: How do I check my solution?

A: To check your solution, you need to plug the value of the variable back into the original equation and see if it is true. If the left-hand side of the equation is equal to the right-hand side, then your solution is correct.

Q: What are some common mistakes to avoid when solving linear equations?

A: Some common mistakes to avoid when solving linear equations include:

Not following the order of operations
Not simplifying the equation using the distributive property
Not isolating the variable
Not checking the solution

Q: How do I graph a linear equation?

A: To graph a linear equation, you need to plot two points on a coordinate plane and draw a line through them. You can also use a graphing calculator or software to graph the equation.

Q: What is the slope-intercept form of a linear equation?

A: The slope-intercept form of a linear equation is y = mx + b, where m is the slope and b is the y-intercept. This form is useful for graphing linear equations and finding the equation of a line.

Q: How do I find the equation of a line?

A: To find the equation of a line, you need to know the slope and the y-intercept. You can use the slope-intercept form of a linear equation to write the equation of the line.

Q: What is the difference between a linear equation and a function?

A: A linear equation is an equation in which the highest power of the variable is 1, while a function is a relation between a set of inputs (called the domain) and a set of possible outputs (called the range). A linear equation can be a function, but not all functions are linear equations.

Q: How do I determine if a linear equation is a function?

A: To determine if a linear equation is a function, you need to check if each input corresponds to exactly one output. If each input corresponds to exactly one output, then the linear equation is a function.