Answer:
-11.25= x
Step-by-step explanation:
1. You would plug in the Y first.
-3= 4x+42
2. Then you would move the 42 to the other side by subtracting it.
-3 = 4x+ 42
-42 - 42
__________
-45= 4x
3. Then you would divide 4 from x, to isolate the variable.
-45= 4x
___ ___
4 4
-11.25= x
