Решите уравнения:2x-3(x-1)=4+2(x-1) x\3+x+1\4=2

1. 2·х - 3·х + 3·1 = 4 + 2·х - 2·1,-х + 3 = 2 + 2·х,2·х + х = 3 - 2,3·х = 1,х = 1/3.Проверка:2·1/3 - 3·(1/3 - 1) = 4 + 2·(1/3 - 1),2/3 - 3·(1/3 - 3/3) = 4 + 2·(1/3 - 3/3),2/3 - 3·(-2/3) = 4 + 2·(-2/3),2/3 + 2 = 4 - 4/3,2/3 + 2·3/3 = 4·3/3 - 4/3,8/3 = 8/3.2. х·(1/3 + 1) = 2 - 1/4,х·(1/3 + 3/3) = 2·4/4 - 1/4,х·4/3 = 8/4 - 1/4,х = 7/4:4/3,х = 7/4·3/4,х = 21/16 = 1 5/16.Проверка:(21/16):3 + 21/16 + 1/4 = 2,21/48 + 21·3/16·3 + 1·12/4·12 = 2,21/48 + 63/48 + 12/48 = 2,96/48 = 2,2 = 2.