Question

Solve the following equation to find the value of x: 9x - 2 = 2x + 12
a)x = 2
b) x = 1
c) x = -2
d) x = 10/7

Answer 1

Answer:

The answer is A.

Step-by-step explanation:

First, you have to add 2 to both sides, to get rid of the -2 on the left side :

$9x - 2 = 2x + 12$

$9x - 2 + 2 = 2x + 12 + 2$

$9x = 2x + 14$

Next, you have to subtract 2x to both sides, to make all the x terms to one side and then, solve it :

$9x - 2x = 2x + 14 - 2x$

$7x = 14$

$x = 14 \div 7$

$x = 2$