Решите уравнение: 1)х+1/8х=3/4 2) 2у-2/5у=6 2/5 3) 3/5х-1/3х=6 1/4 4) (2х-1/8х)

1) х + 1/8х = 3/4
1 1/8х = 3/4
х = 3/4 : 1 1/8 = 3/4 : 9/8 = 3/4 * 8/9 = 2/3
2) 2у - 2/5у = 6 2/5
1 3/5у = 6 2/5
у = 6 2/5 : 1 3/5 = 32/5 : 8/5 = 32/5 * 5/8 = 4
3) 3/5х - 1/3х = 6 1/4
(9-5)/15х = 6 1/4
4/15х = 6 1/4
х = 6 1/4 : 4/15 = 25/4 * 15/4 = 375/16 = 23 7/16
4) (2х - 1/8х) : 1/2 = 1/3
1 7/8х = 1/3 * 1/2 = 1/6
х = 1/6 : 1 7/8 = 1/6 : 15/8 = 1/6 * 8/15 = 4/45