Решите уравнения у-5/6=4/3; 2/5=6/х+3; 5/6=15/2х-3; 12:4/5х=20:1/4 /-дробная черта

помагу если мне поможеш

у-5/6=4/3у=5/6+4/3у=5/6+8/6у=13/6=2 целых 1/62/5 = 6/х + 36:х + 3 = 2/66:х = 2/6 - 36:х = - 2 4/6 = - 2 2/3х = 6 : (-8/3)х = - 18/8х = - 2 1/45/6 = 15/2х - 315/2х - 3 = 5/615/2х = 3 + 5/615/2х = 3 5/6 = 23/6х = 23/6 : 15/2х = 23/4512 : 4/5х = 20 : 1/412 : 4/5х = 54/5х = 12 : 54/5х = 12/5х = 12/5 : 4/5х = 3