Question

a) 3x=90
b) 2x+ 10= 70
c) 2x+ 80=3x
d) x+50=3x+20

Answer 1

Resposta:

a)x=30

b)x=30

c)x=40

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39

d)x=15

Explicação passo-a-passo:

a)3x÷3=90÷3

b)2x=70-10

2x=60

c)2x-80x=-80

-78x=80

d)x-3x=20-50

-2x=-30