Ответ:
4/15+2/3х=х-7/10
4/16+7/10=х-2/3х
20+56/80=1/3х
76/80=1/3х
х=76/80 : 1/3
х=76/80× 3/1
х=228/80
х=2,85
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Ответ:
4/15+2/3х=х-7/10
4/16+7/10=х-2/3х
20+56/80=1/3х
76/80=1/3х
х=76/80 : 1/3
х=76/80× 3/1
х=228/80
х=2,85