Предмет: Математика, автор: hikiss

Допоможіть будь ласка

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Автор ответа: iramazurk

Пошаговое объяснение:

-(8х - 10) = (-7х + 13)

-8х + 10 = -7х + 13

-8х + 7х = 13 - 10

-х = 3

х = -3

(-5,2х + 2,6) + (12,6 - 4,8х) = 0

-5,2х + 2,6 + 12,6 - 4,8х = 0

-10х + 15,2 = 0

-10х = -15,2

х = -15,2 : (-10)

х = 1,52

(5/7х + 6 3/4) - (2 6/7х - 8 1/4) = 0

5/7х + 6 3/4 - 2 6/7х + 8 1/4 = 0

-2 1/7х + 14 4/4 = 0

-2 1/7х + 15 = 0

-15/7х = -15

х = -15 : (-15/7)

х = -15 * (-7/15)

х = -1 * (-7/1)

х = 7/1

х = 7

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