Question

сколько получится? скажите пож

Answer 1

13/42+11/63-5/42=8/42+11/63=4/21+11/63=12/63+11/63=23/63

Answer 2

13/42 + 11/63 - 5/42= 13/966 + 11/966 - 5/966 = 19/966

НОК (42, 63, 42)=2×3×7×23=966
42 2
21 3
7 7
1

63 3
23 23
1

42 2
21 3
7 7
1