Question

A) 2 x - 20 = 120
B) - x + 42 - 167 = - 6 x
Obs: com cálculo

Answer 1

A) 2 x - 20 = 120

2x=120+20

2x=140

x=140/2

x=70

B) - x + 42 - 167 = - 6 x

-x+6x=167-42

5x=125

x=125/5

x=25

espero ter ajudado!

boa noite!

Answer 2

2x - 20 = 120
2x = 120 + 20
2x = 140
x = 140/2
x = 70
--------------------

-x + 42 - 167 = - 6x
-x + 6x = 125
5x = 125
x = 125/5
x = 25