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sweetchipps
@sweetchipps
July 2022
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Вычислите значение выражения наиболее удобным способом:
1. 1/4+2/5+3/4+3/5
2. 4/5+1/3+2/3+3/5
3. 2 (две целые) 4/7+ 1( одна целая) 2/9+ 3(три целые)4/11+ 4(четыре целые) 3/7
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Answers & Comments
igir12370
1/4+3/4+2/5+3/5=4/4+5/5=1+1=2
4/5+3/5+1/3+2/3=7/5+3/3=1,4+1=2,4
2+4/7+1+2/9+3+4/11+4+3/7=10+4/7+3/7+2/9+4/11=
10+7/7+(2*11+4*9)/11*9=11+(22+36)/99=11+58/99=11 58/99
32 votes
Thanks 45
aleks41
1) 1/4+2/5+3/4+3/5=(1/4+3/4)+(2/5+3/5)=4/4+5/5=1+1=2.
2) 4/5+1/3+2/3+3/5=(1/3+2/3)+(4/5+3/5)=3/3+7/5=1+1 2/5=2 2/5=2,4.
3) 2 4/7+1 2/9+3 4/11+4 3/7=(2 4/7+4 3/7)+(1 2/9+3 4/11)=7+4+(2/9+4/11)=11+(22+36)/99=
=11+58/99=11 58/99.
Ответ 11целых 58/99.
23 votes
Thanks 44
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Answers & Comments
4/5+3/5+1/3+2/3=7/5+3/3=1,4+1=2,4
2+4/7+1+2/9+3+4/11+4+3/7=10+4/7+3/7+2/9+4/11=
10+7/7+(2*11+4*9)/11*9=11+(22+36)/99=11+58/99=11 58/99
2) 4/5+1/3+2/3+3/5=(1/3+2/3)+(4/5+3/5)=3/3+7/5=1+1 2/5=2 2/5=2,4.
3) 2 4/7+1 2/9+3 4/11+4 3/7=(2 4/7+4 3/7)+(1 2/9+3 4/11)=7+4+(2/9+4/11)=11+(22+36)/99=
=11+58/99=11 58/99.
Ответ 11целых 58/99.