Question

1) Calcule a raiz ou solução das equações:

a) 8x-9=39


b) 4x-9= 1-2x


c) x + 5 = 20 - 4x


d) 9x - 4x + 10 = 7x-30​

Answer 1

Resposta:

a) 8x-9=39

  8x=48

  x=48/8

  x=6

b) 4x-9= 1-2x

4x+2x=1+9

6x=10

x=10/6

c) x + 5 = 20 - 4x

x+4x=20-5

5x=15

x=15/5

x=3

d) 9x - 4x + 10 = 7x-30

    9x-4x-7x=-30

    (x-1)-2x=-30 (x-1)​

    x=30/2

    x=15

Explicação passo a passo:

Answer 2

Resposta:

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Explicação passo-a-passo:

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