63/5-3 5/12; 9 1/2-4 7/18; 9 2/5-3 7/8; 8 2/3-2 5/7; - вопрос №635351291247189253788232571971243512776325491 от alina20021982 09.01.2022 14:13

Question

Математика: 63/5-3 5/12; 9 1/2-4 7/18; 9 2/5-3 7/8; 8 2/3-2 5/7; 19 7/12+43 5/12; 7 7/15+4 11/12; 4 7/10+9 9/14

alina20021982 · Answer

6 3/5 - 3 5/12 = 6 36/60 - 3 15/60 = 3   21/60 = 3 7/20
9   1/2 - 4   7/18   = 9 9/18 - 4 7/18 = 5 2/18 = 5 1/9
9 2/5 - 3 7/8 = 9 16/40 - 3 35/40 = 5   21/40
8 2/3 -   2   5/7 = 8 14/21 - 2 15/21 = 5 20/21
19 7/12 + 43 5/12 = 62 +12/12 = 62+1 = 63
7 7/15 + 4   11/12 = 7 28/60 + 4 55/60 = 11 + 1 23/60 = 12 23/60
4 7/10 + 9   9/14 = 4 49/70 + 9 45/70 = 13 + 1 24/70 = 14 12/35