Question

solve 3ax + 4ax = 5ax + 4 for x. assume a ≠ 0. a. x = 3a b. x = 2a c. $x = \frac{2}{a}$ d. $x = \frac{1}{3a}$

Explanation:

Step1: Combine like terms left side

$3ax + 4ax = 7ax$

Step2: Subtract $5ax$ from both sides

$7ax - 5ax = 4$
$2ax = 4$

Step3: Solve for x (divide by $2a$)

$x = \frac{4}{2a} = \frac{2}{a}$

Answer:

C. $x = \frac{2}{a}$