Ответ:
\(18\frac{2}{17}-(3\frac{5}{17}+x)=5\frac{5}{17}\).
\(3\frac{5}{17}+x=18\frac{2}{17}-5\frac{5}{17}=12\frac{14}{17}\).
\(x=12\frac{14}{17}-3\frac{5}{17}=9\frac{9}{17}\).
\(2.7x-1.84x+5.87=8.88\).
\(0.86x=8.88-5.87=3.01\).
\(x=3.01:0.86=3.5\).
Ответ: 1) \(x=9\frac{9}{17}\); 2) \(x=3,5\).
