Question

выполните действия:2/3+1/9. 3/5+2/7 . 1/6+3/8.  2/3-3/5. 5/6-1/4

Answer 1

2/3+1/9=79;3/5+2/7=31/35;1/6+3/8=13/24;2/3-3/5=1/15;5/6-1/4=13/12

Answer 2

1) 7/9
2) 1 1/35
3) 26/48
4) 1/15
5) 14/24

p.s. сокращайте сами)))

Answer 3

2/3+1/9 = (6/9) + (1/9) = 7/9
3/5+2/7 = (21/35) + (10/35) = 31/35
1/6+3/8 = (4/24) + (9/24) = 13/24
2/3-3/5 = (10/15) - (9/15) = 1/15
5/6-1/4 = (10/12) - (3/12) = 7/12