Автор - MishaGalin

Решите уравнения:
-9(8-9х)=4х+5
-4+х/5=х+4/2

Ответ

Автор - takushnir

1. -9(8-9х)=4х+5

-72+81х=4х+5; 77х=77⇒х=1

2. (-4+х)/5=(х+4)/2; -8+2х=5х+20; 3х=-28х=-28/3

х= -9  1/3

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