Question

gostaria de saber a conta armada de ×+7×+12=0 ?

Answer 1

x+7x+12 = 0
8x+12 = 0
8x = -12
x = -12/8 (simplificando por 4, temos)
x = -12:4/8:4
x = -3/2

Answer 2

x+7x+12=0
x+7x=0-12
8x=-12
x=-12/8
x=-3/2