Решите уравнение 1)3х-1=2(х-2);  2)3(х+5)=7-5х; 3)19(у-9)=3(у+7); 4) 4(х-9)=3(х-8);  5)3(2х-9)=5(х-4);  6)7(3-2х)=15(1-х)
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