Resposta :
Ok vamos lá
A)2× +2= 0
2x= 2
x= -2÷2
x= -1
B)9× = 6× + 12
9x - 6x = 12
3x = 12
x= 12÷3
x= 4
C)5× - 1 = 3× + 11
5x - 3x = 11 + 1
2x = 12
x= 12÷2
x= 6
2x= 2
x= -2÷2
x= -1
9x - 6x = 12
3x = 12
x= 12÷3
x= 4
5x - 3x = 11 + 1
2x = 12
x= 12÷2
x= 6