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Автор - annashnaider952

2/3|×|-8,5+1/7|×|=0
решите уравнение​

Ответ

Автор - matilda17562

Ответ:

-10 1/2; 10 1/2.

Пошаговое объяснение:

2/3•|х|-8,5+1/7•|х|=0

2/3•|х|+1/7•|х|=8,5

(2/3 + 1/7)•lxl = 8,5

(14/21 + 3/21)•lxl = 8,5

17/21•lxl = 8,5

lxl = 8,5 : 17/21

lxl = 17/2 • 21/17

lxl = 21/2

lxl = 10 1/2

x = ± 10 1/2

Ответ: -10 1/2; 10 1/2.

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