Question

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

Answer 1

$5(3-x)+2(x+1)=-x+5$

$15-5x+2x+2=-x+5$

$15-3x+2=-x+5$

$-3x+x=5-15-2$

$-2x=-12$

$2x=12$

$x=12/2$

$x=6$

Espero ter ajudado :D