Question

Which value of x from the set {4, 5, 6, 7}, makes this equation true?

4(8 − x) = 8

Answer 1

6

Explanation:

You don't even need the set.

Distribute.

4 x 8 = 32

4 x -x = -4x

Carry over the 32.

8 - 32 = -24

-24 = -4x

-24 / -4x = 6

Test it.

8 - 6 = 2

4 x 2 = 8

It's good!