Question

A) X+X+50=X+120


B) X+X+12=X+36


C) X+X+54=X+60


D) X+X+10=X+35

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Answer 1

Olá, boa noite ☺

Resoluções:

a)

x+x+50=x+120

2x -x = 120 -50

x=70

b)

x+x+12=x+36

2x + 12 = x + 36

x = 36 - 12

x=24

c)

x+x+54=x+60

2x -x = 60 - 54

x = 6

d)

x+x+10=x+35

2x -x = 35 - 10

x=25

Bons estudos !