Предмет: Математика, автор: гуля791

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Автор ответа: Rosetta6036

0

13X+78-72=123
13X+6=123
13X=123-6
13X=117
X=117/13
X=9
Ответ 9
77+8(x-5)=125
77+8x-40=125
8x+37=125
8x=125-37
8x=88
x=88/8
x=11
Ответ:11

Автор ответа: KLIRICA

0

Держи))))))))))))))))

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