Question

9x – 2 = 4x + 18

b) 2x – 10 + 7x + 10 = 180

c) 7y – 10 = y + 50

Answer 1

Resposta:

a)4

b)20

c)10

Explicação passo-a-passo:

a)9x-4x=+18+2

+5x=20

x=20/5

x=4

b)2x+7x=180+10-10

9x=180

x=180/9

x=20

c)7y-y=+50+10

6y=60

y=60/6

y=10