Question

Determine which equation below have x = 15 as a solution.

A.
3x = 15

B.
x – 12 = 27

C.
4 + x = 19

D.
x
_
3= 1.5

Answer 1

C, 4+x=15

Explanation:

since you're trying to find x you need to isolate it, so use the other numbers you have, 19 and 4, subtract 4 from 19, (19-4) to get x=15.

Answer 2

The answer is C because 4 + 15 = 19.