Resposta :
Resposta:
a) 2x -6 = -22
2x= -22 +6
2x= -16
x= -16÷2
x= -8
b)3x = 126
8 48
3x×48 = 126×8
3x = 1008÷48
3x = 21
x= 21/3
x= 7
c) 3(x-1)= x+11
3x-3= x+11
3x-x= 11+3
2x= 14
x= 14/2
x= 7
Resposta:
a) 2x -6 = -22
2x= -22 +6
2x= -16
x= -16÷2
x= -8
b)3x = 126
8 48
3x×48 = 126×8
3x = 1008÷48
3x = 21
x= 21/3
x= 7
c) 3(x-1)= x+11
3x-3= x+11
3x-x= 11+3
2x= 14
x= 14/2
x= 7