7/20 и 5/12 = 21/60 и 25/60
11/24 1/30 = 55/120 4/120
3/10 и 7/16 = 24/80 и 35/80
3/16 и 1/10 = 15/80 и 8/80
11/18 и 7/12 = 22/36 и 21/36
7/24 и 2/15 = 35/120 и 16/120
1/12 и 2/9 = 3/36 и 8/36
4/21 и 13/28 = 16/84 и 39/84
3/14 и 2/21 = 18/84 и 8/84
1) найдем сколько кустов сирени:
25/5=5
2) сколько кустов акации:
(25+5)-8=22
1)647040:8=80880
2)573*680=389640
3)389640+563429=953069