Question

resolva a equação:
2x + 8 = 7x - 13​

Answer 1

Resposta:

2X+8=7x-13

8+13= 7X-2X

21= 5X

21/5=X

X= 4,2

Answer 2

Resposta:

Explicação passo-a-passo:

a)

8 + 7x - 13 = x - 27 - 5x

7x - 13 + 8 = x - 5x - 27

7x - 5 = - 4x - 27

7x + 4x = - 27 + 5

11x = - 22

x = - 22/11

x = - 2

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b)

9x + 2 - (4x + 5) = 4x + 3

9x + 2 - 4x - 5 = 4x + 3

5x - 3 = 4x + 3

5x - 4x = 3 + 3

x = 6

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c)

3.(2 - x) - 5.(7 - 2x) = 10 - 4x + 5

6 - 3x - 35 + 10x = 15 - 4x

7x - 29 = 15 - 4x

7x + 4x = 15 + 29

11x = 44

x = 44/11

x = 4