((с+4))/6=(3с-2)/7
7(с+4)=6(3с-2)
7с+28=18с-12
7с-18с=-12-28
-11с=-40
с=-40/(-11)
с=3 7/11
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((с+4))/6=(3с-2)/7
7(с+4)=6(3с-2)
7с+28=18с-12
7с-18с=-12-28
-11с=-40
с=-40/(-11)
с=3 7/11