Question

RESOLVA :
a) 2x+7=1

b)3m-2=2m+2

c)3c+2=c+2

d)4y-z=5y+5

e) Z
-- = 8
2

Answer 1

Resposta:

A)

2x=1 - 7 (o sete passa mudando o sinal)

2x = -6

x = -6/2

x = -3

b)

3m -2 = 2m +2

3m - 2m = 2 + 2

1m= 4

m= 4

C)

3c + 2= c + 2

3c - c = 2 -2

2c = 0

resp: 2c