Question

como se faz essa conta?7(x+10)-8(x+8)=0

Answer 1

7(x+10)-8(x+8)=0
7x+70-8x-64=0
7x-8x=-70+64+0
1x=-6
x=-6

Answer 2

$7(x+10)-8(x+8=0 \\ 7*x+7*10-8*(x+8)=0 \\ 7x+7*10-8*(x+8)=0 \\7x+70-8*(x+8)=0 \\ 7x+70-(8*x+8*8)=0 \\ 7x+70-(8x+8*8)=0 \\ 7x+70-(8x+64)=0 \\ 7x+70-8x-64=0 \\ -x+70-64=0 \\ -x+6=0 \\ -x=-6 \\ x=6$