Ответ:
1)2 2/3 + 4 4/5 = 8/3+24/5=40+72/15=112/15= 7 7/15
2)3 4/7 - 1 2/3= 25/7 - 5/3=25-5/21=20/21
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Ответ:
1)2 2/3 + 4 4/5 = 8/3+24/5=40+72/15=112/15= 7 7/15
2)3 4/7 - 1 2/3= 25/7 - 5/3=25-5/21=20/21