Question

me ajudem nessa equaçao --> 3(5-x)-3(1-2x)=42

Answer 1

3 ( 5 - x ) - 3 ( 1 - 2x ) = 42
15 - 3x - 3 + 6x = 42
- 3x + 6x = 42 - 15 + 3
3x = 30
x = 10