Выполните действия:
1) (7/8-13/20)+9/10
2) (7/18-1/12)+5/6
3) (3/4-8/15)+17/20
1) (7/8-13/20)+9/10
2) (7/18-1/12)+5/6
3) (3/4-8/15)+17/20
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Answers & Comments
2) (7/18-1/12)+5/6=14/36-3/36+30/36=11/36+30/36=41/36=1 целая 5/36
3) (3/4-8/15)+17/20=45/60-32/60+51/60=64/60=16/15=1 целая 1/15