Question

x+x-4=17-2x+1

Answer 1

$x+x-4 = 17 -2x+1$

$2x + 2x = 17 + 1 + 4$

$4x = 22$

$\boxed{x = \frac{22}{4} = \frac{11}{2}}$

Espero ter ajudado. :))

Answer 2

x+x-4=17-2x+1
x+x +2x = 17+1+4
4x = 22
x = 22/4       simplificando 22 e 4 por 2
x = 11/2  ou  5,5