Question

Resolvam essa equação pra mim prfv

3(5-x)-3(1-2x) =42

Answer 1

3 (5x-x) - 3(1-2x) = 42

15x - 3x - 3 + 6x = 42

15x - 3x + 6x = 42 + 3

12x + 6x = 45

18x = 45

x = 45/18 ou 2,5