Решите (6/35-x)+8/35=12 35
(6/35 - х ) + 8 /35 = 12/35 6/35 - х= 12/35 - 8/35 6/35 - х= 4/35 х= 6/35 - 4/35 х= 2/35 Проверим: (6/35-2/35) + 8/35 =12/35 4/35 + 8/35 = 12/35 12/35 = 12/35