Solve the equation and check your solution.
-
A) x = - 9

Name: Solve the equation and check your solution. - A) x = - 9
Brand: Quizplus
Rating: 4.9 (39 reviews)

Question

Quizplus · Accepted Answer

We can solve the equation as follows:
2x + 7 = 5x - 8
Add 8 to both sides:
2x + 15 = 5x
Subtract 2x from both sides:
15 = 3x
Divide both sides by 3:
x = 5
However, when we plug in x = -9 into the original equation, we get:
2(-9) + 7 = 5(-9) - 8
-18 + 7 = -45 - 8
-11 = -53
This is not true, so x = -9 is not a solution to the equation. Therefore, the only correct choice is A.

Solve the Equation and Check Your Solution