Question

Resolver 4(x-3) -7(x-4)=6-x

Answer 1

4(x-3) -7(x-4)=6-x
4x - 12 - 7x + 28 = 6 - x        (-)*(-) = +
4x - 7x -12 + 28 = 6 - x         (+)*(-) = -
-3x + 16 = 6 - x
16 - 6 = 3x - x 
10 = 2x 
x = 5

Answer 2

4x-12-7x+28=6-x
-3x+16=6-x
2x=10
x=5