Быстро! Полный разбор! Б) 1/8-4:2/3В)18*5/54-5/9#572А)(1 1/4+1 2/3-7/12):1 1/6Б)2 4/15-4 1/5*(1 5/6-41/42). Created by AnastasiyaLostra5. matematika-ru

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August 2021 1 12 Report

Быстро! Полный разбор!
Б) 1/8-4:2/3
В)18*5/54-5/9
#572
А)(1 1/4+1 2/3-7/12):1 1/6
Б)2 4/15-4 1/5*(1 5/6-41/42)

Answers & Comments

irinaorlova2 Б) 1\8-4:2\3= 6 1\8
1)4:2\3=4*3\2=12\2=6
2)1\8-(-6)=1\8+6=6 1\8

в)18*5\54-5\9=4\9
1)18*5\54=5\3
2)5\3-5\9=5*6\18-5*2\18=30\18-10\18=8\18=4\9

а)(1 1\4+1 2\3-7\12):1 1\6=(2+(1*3\12+2*4\12-7\12))*6\7=(2+8\12)*6\7=
=2 2\3*6\7=8\3*6\7=16\7=2 2\7
б)2 4\15-4\1\5*(1 5\6-41\42)=-1 23\30
1)1 5\6-41\42=11*7\42-41\42=77\42-41\42=36\42=6\7
2)4 1\5*6\7=21\5*6\7=18\5=3 3\5
3) 1 5\6-3 3\5=-2+(5*5\30-3*6\30)=-2+7\30=-1 23\30

Answers & Comments

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