Resposta :
Resposta:
a) 2x = 8
x = 4
b) -5x + 10 = 15
-5x = 5 .(-1)
5x = -5
x = -1
c) x - 2x = -12
-x = -12 .(-1)
x = 12
d) 4x + x - 6x = -31
-x = -31 .(-1)
x = 31
e) x (2 + 17 - 13)
x = 0
f) 8 + 3x = 4x - 41
-x = -49 . (-1)
x = 49
Resposta:
a) 2x = 8
x = 4
b) -5x + 10 = 15
-5x = 5 .(-1)
5x = -5
x = -1
c) x - 2x = -12
-x = -12 .(-1)
x = 12
d) 4x + x - 6x = -31
-x = -31 .(-1)
x = 31
e) x (2 + 17 - 13)
x = 0
f) 8 + 3x = 4x - 41
-x = -49 . (-1)
x = 49