Автор - amirtolegen2008

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Ответ

Автор - Larisa4567

Ответ:

Пошаговое объяснение:

7х+139= 15*13

7х +139 = 195

7х=195-139

7х=56

х= 56 ÷ 7

х= 8

294/ х+8 = 26-5

294/х+8 = 21

294 : (х+8) =21

х+8 = 294: 21

х+8 =14

х= 14-8

х=6

3)

(413- х): 12 + 27 =60

(413 -х) : 12 = 60-27

(413 -х) : 12 = 33

413 -х= 33 *12

413 -х = 396

413-396 =х

х= 17

4)

41 -(216 - 3х) : 34=35

41-35=216- 3х

216-3х= 6

216- 6 = 3х

3х= 210

х= 210 : 3

х= 70

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