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ivansivkov20041
@ivansivkov20041
July 2022
1
11
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помогите решить только номер 2
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Arkadiя
(6 1/5-4 1/3):(-1 1/3)=(31/5-13/3):(-4/3)=(31*3-13*5)/15:(-4/3)=80/15*(-3/4)=-20/5=-4
-3 2/3*1 1/2+1 2/3*1 1/2=-8/3*3/2+5/3*3/2=-8/2+5/2=-3/2=-1 1/2
(-6 1/7+5 3/4):11/14-(-3 3/4+1 5/6):1/6=16 1/2
1)-6 1/7+5 3/4=-43/7+23/4=(-43*4+23*7)/28=-11/28
2)-11/28:11/14=-11/28*14/11=(-11*14)/28*11=-1/2
3)-3 3/4+1 5/6=-15/4+11/6= (-15*3+11*2)/12)=-23/12
4)-23/12:1/6=-23/12*6=-23/2
5)-1/2-(-23/2)=-1/2+23/2=22/2=11
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Arkadiя
в последнем примере ответ не 16 1/2, а будет 11, пример решен по действиям
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Answers & Comments
-3 2/3*1 1/2+1 2/3*1 1/2=-8/3*3/2+5/3*3/2=-8/2+5/2=-3/2=-1 1/2
(-6 1/7+5 3/4):11/14-(-3 3/4+1 5/6):1/6=16 1/2
1)-6 1/7+5 3/4=-43/7+23/4=(-43*4+23*7)/28=-11/28
2)-11/28:11/14=-11/28*14/11=(-11*14)/28*11=-1/2
3)-3 3/4+1 5/6=-15/4+11/6= (-15*3+11*2)/12)=-23/12
4)-23/12:1/6=-23/12*6=-23/2
5)-1/2-(-23/2)=-1/2+23/2=22/2=11