Question

Resolva as seguintes equações:
1- 3×=-18
2- ×+5=17
3- 2×+7=-3

Answer 1

1)
$3x = - 18 \\ x = - 18 \div 3 \\ x = - 6$
2)
$x + 5 = 17 \\x = 17 - 5 \\ x = 12$
3)
$2x + 7 = 3 \\ 2x = 3 - 7 \\ x = - 4 \div 2 \\ x = - 2$