решите уравнения 5) 3/7x=1 целая 4/5
6)9/10y=4целых 1/2

5) 3/7х = 1 4/5х = 1 4/5 : 3/7х = 9/5 * 7/3х = 21/5х = 4 1/56) 9/10у = 4 1/2у = 4 1/2 : 9/10у = 9/2 * 10/9у = 10/2у = 5