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lyudsiya1337
@lyudsiya1337
July 2022
1
7
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1)7/16+5/16-1/16
2)пять целых 7/10- две целых 3/10+ шесть целых 1/10
3)7/10 +1/5
4)6/7-1/2
5)3/20 умножить на 7
6)20/21 разделить на 4
7) (7/20+2/5) умножить на 2-1 в начале скобки.
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ник3709
1)7/16+5/16-1/16=(7+5-1)/16=11/16;
2)5 7/10-2 3/10+6 1/10=9 5/10=9 1/2;
3)7/10+1/5=7/10+2/10=9/10;
4)6/7-1/2=12/14-7/14=5/14;
5)3/20×7=(3×7)/20=21/20=1 1/20;
6)20/21÷4=20/(21×4)=5/21;
7)(7/20+2/5)×2-1=15/20×2-1=3/2-1=
1 1/2-1=1/2.
1 votes
Thanks 1
lyudsiya1337
Огромное Спасибо!!!!
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Answers & Comments
2)5 7/10-2 3/10+6 1/10=9 5/10=9 1/2;
3)7/10+1/5=7/10+2/10=9/10;
4)6/7-1/2=12/14-7/14=5/14;
5)3/20×7=(3×7)/20=21/20=1 1/20;
6)20/21÷4=20/(21×4)=5/21;
7)(7/20+2/5)×2-1=15/20×2-1=3/2-1=
1 1/2-1=1/2.