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lyudka2000
@lyudka2000
October 2021
1
7
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помогите срочно надо решить :вычислите: (-7 1/3 + 6 7/8 ) : 3/4 + ( - 5 1/4+ 4 21/40) : 3/7 как это решать? помогите
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ndusha
Verified answer
(-7 1/3 + 6 7/8 ) : 3/4 + ( -
5 1/4+ 4 21/40) : 3/7=-1 7/8
по действиям
1)-7 1/3+6 7/8=-7 8/24+6 21/24=-1 8/24+8/24+13/24=-1+13/24=-11/24
2)-11/24:3/4=-11/24*4/3=-11/6*1/3=-11/18
3)-5 1/4+4 21/40=-5 10/40+4 21/40=-1 10/40+10/40+11/40=-1+11/40=-29/40
4)-29/40:3/7=-29/40*7/3=-203/120=-1 83/120
5)-11/18+(-1 83/120)=-11/18-1 83/120=-66/360-1 249/360=-1 315/360=
-1 63/72=-1 7/8
1 votes
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Answers & Comments
Verified answer
(-7 1/3 + 6 7/8 ) : 3/4 + ( -5 1/4+ 4 21/40) : 3/7=-1 7/8по действиям
1)-7 1/3+6 7/8=-7 8/24+6 21/24=-1 8/24+8/24+13/24=-1+13/24=-11/24
2)-11/24:3/4=-11/24*4/3=-11/6*1/3=-11/18
3)-5 1/4+4 21/40=-5 10/40+4 21/40=-1 10/40+10/40+11/40=-1+11/40=-29/40
4)-29/40:3/7=-29/40*7/3=-203/120=-1 83/120
5)-11/18+(-1 83/120)=-11/18-1 83/120=-66/360-1 249/360=-1 315/360=
-1 63/72=-1 7/8