Question

What value of x makes the equation 3x+7=22 true?

Answer 1

Answer:

x = 5

Step-by-step explanation:

Subtract 7 from both sides:  3x + 7- 7 = 22 - 7

Simplify: 3x = 15

Divide both sides by 3

Simplify: x = 5

Hope this helps:)

Answer 2

Answer:

$x=5$

Step-by-step explanation:

Given $3x+7=22$, our goal is to isolate $x$ such that will have an equation that tell us $x$ is equal to something.

Start by subtracting 7 from both sides:

$3x+7-7=22-7,\\3x=15$

Divide both sides by 3:

$\frac{3x}{3}=\frac{15}{3},\\x=\frac{15}{3}=\boxed{5}$

Therefore, the value of $x=5$ makes the equation $3x+7=22$ true.