Question

12x-3(x-1)=5+4(3x-3)

Answer 1

12x-3x+3 = 5+12x-12
12x-3x-12x = 5-12-3
12x-15x= -10
-3x = -10 × ( -1 )
x = 10/3

Acho que é assim!

Answer 2

Resolução:

12x-3(x-1) = 5+4(3x-3)
12x-3x+3=5+12x-12
12x-3x-12x=5-12-3
-3x= -10
3x=10
x= 10/3

Bons estudos :D