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Реши уравнения:

а) \(\cfrac{x+6}{9} = \cfrac{1}{3}\) ;

\(\cfrac{x+6}{9} \cdot 9 = \cfrac{1}{3} \cdot 9\) ;

\(x+6=3\) ;

\(x=-3\) ;

б) \(\cfrac{2x-5}{4} = 1\) ;

\(x = \) [ ];

в) \(\cfrac{x-5}{10} = \cfrac{x-2}{5}\) ;

\(x = \) [ ];

г) \(\cfrac{2x+1}{3} - 1 = \cfrac{2-x}{6}\) ;

\(x = \) [ ].