Question

rezolvare va rog, dau coroana!​

Answer 1

Răspuns:

Explicație pas cu pas:

(x - 2)/x = 7/13

13(x - 2) = 7x

13x - 26 = 7x

13x - 7x = 26

6x = 26

x = 26/6 = 13/3

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3(3x + 4) = 5(x + 5)

9x + 12 = 5x + 25

9x - 5x = 25 - 12

4x = 13

x = 13/4

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7(4x - 3) = 11(2x + 5)

28x - 21 = 22x + 55

28x - 22x = 55 + 21

6x = 76

x = 76/6 = 38/3

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4(x + 1) = 0,5(2x + 8)

4x + 1 = x + 4

4x - x = 4 - 1

3x = 3

x = 3/3 = 1