Solve the equation 7x – 8a = 3x + 24a for x.

Question

Solve the equation 7 x – 8a = 3x + 24a for x.

A. x = 32a

B. x = 8a

C. x = 24a

D. x = 3a

Answer 1

Hello Amber,

If you start with 7x - 8a = 3x+24a, we can subtract 3x from both sides of the equation. This yields:

4x-8a = 24a. Now add 8a to both side of the equation we just wrote. This gives:

4x = 32a.

Finally, divide both sides by 4 which gives x = 8a.  So your answer is (b).