Question

d) x + 2 x + 20 = x + 80

e) x – 120 = 34

f) x + 3x + 50 = 2x + 110
help please porfavo rapido

Answer 1

Resposta:

D) 30

E) 154

F) 40

Explicação passo-a-passo:

D)

X + 2 . X + 20 = X + 80

X + 2 . X - X = 80 - 20

2 . X = 60

X = 60 ÷ 2

X = 30

. . .

E)

X - 120 = 34

X = + 120 + 34

X = 154

. . .

F)

X + 3 . X + 50 = 2 . X + 110

X + 3 . X - 2 . X = 110 - 50

2 . X = 80

X = 80 ÷ 2

X = 40