Ответ:a) 5y+3=36-y -> 6y=33 -> y=5,5.б) 7y-2 = 2y+10 -> 5y=12 -> y=2,4.в) 1,7y+37 = (9,3y-25)-14 -> 1,7y+37 = 9,3y-39 -> 76=7,6y -> y=10.