Оформите решение всех примеров так: 1/2 + 1/6 = 3+1/6=4/6=2/3
3/4 - 2/3
5/6 + 1/2
5/6 - 3/8
4/9 + 1/6
7/10 + 7/15
19/20 -37/40
7/20 + 3/4
19/20 + 37/40
3/4 - 2/3
5/6 + 1/2
5/6 - 3/8
4/9 + 1/6
7/10 + 7/15
19/20 -37/40
7/20 + 3/4
19/20 + 37/40
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3/4 - 2/3=9\12-8\12=1\125/6 + 1/2=5\6+3\6=8\6=1 2\6=1 1\3
5/6 - 3/8=20\24-9\24=11\24
4/9 + 1/6=8\18+3\18=11\18
7/10 + 7/15=21\30+14\30=35\30=1 5\30=1 1\6
19/20 -37/40=38\40-37\40=1\40
7/20 + 3/4=7\20+15\20=22\20=1 2\20=1 1\10
19/20 + 37/40=38\40+37\40=75\40=1 35\40=1 7\8
торопилась помочь тебе:)