Question

Розв'яжи рiвняння в робочому зошиті. ​

Answer 1

Ответ:

Пошаговое объяснение:

x/8 = (x-5)/3

3x = 8(x-5)

3x = 8x - 40

8x - 3x = 40

5x = 40

x = 40:5

x = 8

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(x+7)/4 = (x+8)/5

5(x+7) = 4(x+8)

5x + 35 = 4x + 32

5x - 4x = 32 - 35

x = -3

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(x+17)/12 = (x+10)/5

5(x+17) = 12(x+10)

5x + 85 = 12x + 120

12x - 5x = 85 - 120

7x = -35

x = -35:7

x = -5

===============

(x-2)/9 = (x+3)/14

14(x-2) = 9(x+3)

14x - 28 = 9x + 27

14x - 9x = 27 + 28

5x = 55

x = 55:5

x = 11