сократите:9/15 , 8/56 , 42/90 , 38*18/9*19

Question

сократите:9/15 , 8/56 , 42/90 , 38*18/9*19

Answer 1

9/15 = 3/5
8/56 = 1/7
42/90 = 7/15
38*18/9*19 = 684/171= 4

Answer 2

3/5................
2/7
7/15
4.