Question

A ) 7x-9= 14x- 40



B ) 4 ( x-5 ) = 8x-6

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Answer 1

Explicação passo-a-passo:

7x - 9 = 14x - 40

7x - 14x = -40 + 9

-7x = -31

x = -31/-7

x = -31/-7

B)

4x - 20 = 8x - 6

4x - 8x = -6 + 20

-4x = 14

x = 14/-4

x = 7/-2

Answer 2

Resposta:

A) 7x-9= 14x- 40

7x-14x=9-40

-7x=-31 (-1)

7x=31

x=31/7

x=4,42

B ) 4 ( x-5 ) = 8x-6

4x-20=8x-6

4x-8x=20-6

-4x=14 (-1)

4x=14

x=14/4

x=3,5

Explicação passo a passo: