✌ 23целых-1/40-19целых12/20,112целых4/51-13целых6/7

Question

✌ 23целых-1/40-19целых12/20,112целых4/51-13целых6/7

Answer 1

1.
23 - 1/40 - 19 12/20 = 22 40/40 - 1/40 - 19 24/40 = (22 - 1 - 19) + (40/40 - 1/40 - 24/40) = 2 + (15/40) = 2 3/8,
2.
112 4/51 - 13 6/7 = (112 - 13) + (4/51 - 6/7) = 99 + (28/357 - 306/357) = 99 - 278/357 = 98 79/357