Question

Plis
2,3/ 5 + 7,8/15 =
9,1/3 +6,2/7 =
1,3/5 +2,1/4=
2,7/10: 4,1/5=
17,25 +4,7-1/3=
(4,1/2 + 2,1/3)razy3

Answer 1

2,3/ 5 + 7,8/15 = 2 9/15 + 7 8/15 = 9 17/15 = 10 2/15
9,1/3 +6,2/7 = 9 7/21 + 6 6/21 = 15 13/21
1,3/5 +2,1/4= 1 12/20 + 2 5/20 = 3 17/20
2,7/10: 4,1/5= 27/10 * 5/21 = 27/42 = 9/14
17,25 +4,7-1/3= 21,95 - 1,3 = 20,65
(4,1/2 + 2,1/3)razy3 = (4 3/6 + 2 2/6) * 3 = 6 5/6 * 3/1 = 41/2 = 20 1/2