Решите уравнение
а) y+4/15=2/3
б) y-5/20=5/8
В) x-2/5=3/7-8/35​

а)

y + 4/15 = 2/3 ,

у = 2/3 - 4/15,

у = 10/15 - 4/15,

у = 6/15,

у = 2/5,

б)

y - 5/20 = 5/8 ,

у = 5/8 + 5/20,

у = 25/40 + 10/40,

у = 35/40,

у = 7/8,

в)

x - 2/5 = 3/7 - 8/35​,

х = 3/7 - 8/35 + 2/5,

х = 15/35 - 8/35 + 14/35,

х = 21/35,

х = 3/5