Question

Vamos treinar, o que você aprendeu:
a) 2x + 3x - 2 = 4x - 2x + 8
b) 5x - x = 16
c) 4x-2x = 16
d) 4x - 2x + 6x = 4x - 2x + 18
e)5x + 2x = = 28
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Answer 1

A)

5x - 2 =2x + 8

5x - 2x = 8 + 2

3x = 7

x = 7/3

B)

4x = 16

x = 16/4

x = 4

C)

2x = 16

x = 16/2

x = 8

D)

8x = 2x +18

8x - 2x = 18

6x = 18

x = 18/6

x = 3

E)

7x = 28

x = 28/7

x = 4

Answer 2

Resposta:

a)5x-2=2x+8

5x-2x=8+2

3x=10

x=10/3

b)5x-x=16

4x=16

x=16/4

x=4

c)4x-2x=16

2x=16

x=16/2

x=8

d)4x-2x+6x=4x-2x+18

8x=2x+18

8x-2x=18

6x=18

x=18/6

x=3

e)5x+2x=28

7x=28

x=28/7

x=4

espero ter ajudado