Question

3) Resolva as
equações abaixo:

a) 4x - 5 = 23

b) 5x + 4 = 3x + 18

c) 7y + 42 = 9y -2

d) 10m - 50 = - 2m +10​

Answer 1

Resposta:

a) 4x=23+5

4x=28

x=28/4

x=7

b)5x-3x=18-4

2x=14

x=14/2

x=7

c)7y-9y= -42-2

-2y= -44

y= -44/-2

y= 22

d) 10m+2m= 50+10

12m=60

m=60/12

m= 5