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Ответ дан
kruglenkonata804

Пошаговое объяснение:

2) x : (-3) - 20,1 = - 21,9

x : (-3) = - 21,9+20,1

х:(-3)=-1,8

х=5,4

4) - 91,2 + (-2x) = - 100,7

- 91,2 -2x = - 100,7

-2х=-100,7+91,2

-2х=-9,5

х=4,75

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