Answer:
x = 4c - 18
Step-by-step explanation:
=> 4c-3 = x+ 15
Subtracting 15 to both sides
=> x = 4c-3-15
=> x = 4c - 18
x=6
4x- 3 = x+15
-1x -1x
3x- 3=15
+3 +3
3x=18
÷3 ÷3
