Respuesta :

20 - (4x + 4) = 4x + 1 - 8x

Pretend that there is a -1 in front of the bracket

20-1(4x+4)=4x+1-8x

20-4x-4=4x+1-8x

20-4-4x=4x-8x+1

16-4x=-4x+1

Move -4x to the left side. Sign changes from -4x to +4x.

Move +16 to the other side. Sign changes from +16 to -16.

16-16-4x+4x=-4x+4x+1-16

0=-15

Answer: no solution

X=1.875 because when you have a -4 and a positive four you add the opposite and that will give you a positive 8x