Question

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Answer 1

Explicação passo-a-passo:

a) 4. (5 + x) = 3.(8 + x) b) 1.(x + 2) = 4.(3 - x)

20 + 4x = 24 + 3x x + 2 = 12 - 4x

4x - 3x = 24 - 20 x + 4x = 12 - 2

x = 4 5x = 10

x = 10/5

x = 2

c) 4.x = 3. (2 + x) d) 12.(x - 1) = 9 . 6

4x = 6 + 3x 12x - 12 = 54

4x - 3x = 6 12x = 54 + 12

x = 6 12x = 66

x = 66/12 :6

x = 11/2

e) 6.(x - 1) = 4x e) 6.(x +1) = 2.(5 - x)

6x - 6 = 4x 6x + 6 = 10 - 2x

6x - 4x = 6 6x + 2x = 10 - 6

2x = 6 8x = 4

x = 6/2 x = 4/8 :4

x = 3 x = 1/2