Question

resolva a equação 7x+80=4x-7

Answer 1

$7x + 80 = 4x - 7 \\ 7x - 4x = - 7 - 80 \\ 3x = - 87 \\ x = - \frac{87}{3} \\ x = - 29$

Answer 2

7x+80=4x-7
7x-4x=-7-80
3x=-87
x=-87/3
x=-29