№995.а)3 3/4+1/5 б)7 9/20+7/3 в)4 13/25+2/15 г)6 - вопрос №5472835995334157920734132521561121185310111595 от Оксана1241 03.01.2020 14:01

Question

Математика: №995.а)3 3/4+1/5 б)7 9/20+7/3 в)4 13/25+2/15 г)6 1/12+1/18 д)5 3/10+11/15 е)9 5/24+35/36 решить

Оксана1241 · Answer

1) 3 3/4 + 1/5 = 3 15/20 + 4/20 = 3 19/20
2) 7 9/20 + 7/3 = 7 27/60 + 63/60 = 7 90/60 = 7 3/2 = 8 1/2
3) 4 13/25 + 2/15 = 4 39/75 + 10/75 = 4 49/75 = 4 13/25
4) 6 1/12 + 1/18 = 6 3/36 + 2/36 = 6 5/36
5) 5 3/10 + 11/15 = 5 9/30 + 22/30 = 5 31/30 = 6 1/30
6) 9 5/24 + 35/36 = 9 15/72 + 70/72 = 9 85/72 = 10 13/72