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

C, 4+x=15

Step-by-step 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.

12

step-by-step explanation:

a triangle's   full angle is 180 degrees so 180 - 156 = 24. 24/2=12

the factors of 24 are 1, 2, 3, 4, 6, 8, 12 and 24. hope this ! mark brainliest! you v much! : )