Question

Resolva as equaçoes
a) 3x+12=24
b) 6x+54=90
c)12x-42=20
d)2x-42=20
e)4x-180=37

Answer 1

Resposta:

a) 3x+12=24

3x=24-12

3x=12

x=12/3

x=4

b) 6x+54=90

6x=90-54

6x=36

x=36/6

x=6

c)12x-42=20

12x=20+42

12x=62

x=62/12

x=5,16

d)2x-42=20

2x=20+42

2x=62

x=62/2

x=31

e)4x-180=37

4x=37+180

4x=217

x=217/4

x=54,25

Answer 2

Resposta é normal ou de segundo grau??