3 · (3/4+4/5-2/7) : [tex]1\frac{3}{28}[/tex]. Created by anastasiyaprokhorova. matematika-ru

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3 · (3/4+4/5-2/7) : [tex]1\frac{3}{28}[/tex]

karina12309853 3/4 = 0,75
4/5= 0,8
2/7= дробь остаётся
0,75+0,8=1,55
1,55- 2/7 =885/700
885/700*3 = 2655/700
2655/700 : 31/28. =

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karina12309853 Ответ- две целых 491/620