-48/5c-5/2+4с-1/2*(3с-7/9)
-48/5с-5/2+4с-3/2с+7/18
-45/8+4с-3/2с=-25/8с
5/2+7/18=19/9
-25/8с-19/9
Ответ:-25/8с-19/9
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-48/5c-5/2+4с-1/2*(3с-7/9)
-48/5с-5/2+4с-3/2с+7/18
-45/8+4с-3/2с=-25/8с
5/2+7/18=19/9
-25/8с-19/9
Ответ:-25/8с-19/9