Question

Resolva as equações:
$6x - 4 = 2x + 8$
$17 \times - 2 + 4 = 10 + 5 \times$
$4 \times - 10 = 2 \times + 2$
$20 \times - 30 = 5 \times$
$4 \times = - 8 \times + 36$

Answer 1

6x - 4 = 2x + 8

6x - 2x = 8 + 4

4x = 12

 x = 12/4

x = 3

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17x - 2 + 4 = 10 + 5x

17x - 5x = 10 + 2 - 4

       12x = 8

          x = 8/12

          x = 2/3

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4x - 10 = 2x + 2

4x - 2x = 2 + 10

      2x = 12

        x = 12/2

        x = 6

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20x - 30 = 5x

20x - 5x = 30

        15x = 30

           x = 30/15

           x = 2

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4x = - 8x + 36

4x + 8x = 36

      12x = 36

         x = 36/12

         x = 3

bons estudos