Question

resolva as expressões abaixo​

Answer 1

Resposta:

a) 2x+3=29

2x=29-3

2x=26

x=26/2

x=13

b)2x+5=19

2x=19-5

2x=14

x=14/2

x=7

c)3x-4=23

3x=23+4

3x=27

x=27/3

x=9

d)x+2x=150

3x=150

x=150/3

x=50

e)3x=12

x=12/3

x=4

f)3x+12=21

3x=21-12

3x=9

x=9/3

x=3

Answer 2

Resposta:

A x=13

B x=7

C x=9

D x=50

E x=4

F x=3