Ответ:
1)-34,8+42,16-23,7+34,8-42,16+18,5=-5,2
7 4/21-3 9/28- 1 5/28+3 10/21= 151/21-93/28-33/28+73/21 = 224/21-126/28
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Ответ:
1)-34,8+42,16-23,7+34,8-42,16+18,5=-5,2
7 4/21-3 9/28- 1 5/28+3 10/21= 151/21-93/28-33/28+73/21 = 224/21-126/28