Автор - jopik1999

(X+57):7=12
(161-y):16=9
112:(17+x)=4

Ответ

Автор - blabla1
1) (х+57):7=12
    х+57=84
    х=84-57
    х=27
2) (161-у):16=9
161-у=144
у=161-144
у=17
3) 112:(17+х)=4
17+х=28
х=28-17
х=11

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