Question

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Answer 1

Resposta:

a 60

b 35

c 25

d 50

Explicação passo-a-passo:

a) 120 - 180 = 60

x + x + 60 = 180

2x + 60 =180

2x= 180 - 60

x = 120 ÷ 2 = 60

b) x + 10 + x + 2x + 30 = 180

4x +40 =180

4x= 180 - 40

x= 140 ÷ 4= 35

c) 180 - 155 = 25

x = 25

d)180 - 130 = 50

x= 50