Question

3 Resolva
i)5x + 21 = 10x – 19
j)11x + 17 = 10x + 13
k)3 + 1,6x = 0,1x
l)5 ( x – 1 ) = 2 ( x + 2 )

Answer 1

Resposta:

i)

5x - 10x = - 19 - 21

- 5x = - 40

x = - 40/-5

x= 8

j)

11x - 10x = 13 - 17

x = - 4

k) .

1,6x - 0,1x = - 3

1,5x = - 3

x= - 3/1,5

x = -2

l)

5x - 5 = 2x + 4

5x - 2x = 4 + 5

3x = 9

x = 9/3

x = 3

Explicação passo-a-passo:

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