Номер 461 приведите дроби к общему знаменателю 7/20и5/12,
3/16и7/12,1/12и 2/9,8/15и 5/12,11/24и1/30,11/18и7/12,4/21и13/28,7/30 и 1/12
3/16и7/12,1/12и 2/9,8/15и 5/12,11/24и1/30,11/18и7/12,4/21и13/28,7/30 и 1/12
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Ответ:
7/20=21/60
5/12=25/60
3/16=9/48
7/12=28/48
1/12=3/36
2/9=8/36
8/15=32/60
5/12=25/60
11/24=55/120
1/30=4/120
11/18=22/36
7/12=21/36
4/21=16/84
13/28=39/64
7/30=14/60
1/12=5/60