Question

решите уравнение 17/20 - х = 14/20 - 3/20; 8/15 - 7/15 + у = 14/15

Answer 1

1) 17/20-x=14/20-3/20 (*20)
17 - 20x = 14-3
-20x = 11-17
-20x = -6
x = 6/20
x = 0.3

2) 8/15 - 7/15 + y = 14/15 (*15)
8-7+ 15y = 14
15y = 14-1
15y = 13
y = 13/15