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arnold123456789
@arnold123456789
October 2021
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Любимые математики, помогите гуманитарию)
3 примера б) ( 1 1/100 и тд) в)( 6-4 и тд)
Спасибо большое!
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Katya280408
В)
1) 6-4 1/2=6/1-9/2=12/2-9/2=3/2=1 1/2
2) 1 1/2:0,03=3/2*100/3=300/6=50
3) 3 1/20-2,65=61/20-265/100=61/20-53/20=8/20=2/5
4) 2/5×4=8/5=1 3/5
5) 1 3/5+2/5=8/5+2/5=10/5=2
6) 2,5+7 1/2=25/10+15/2=5/2+15/2=20/2=10
7) 50:2=х:10
25=х:10
х=25×10
х=250
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Katya280408
пример б я не увидела
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Answers & Comments
1) 6-4 1/2=6/1-9/2=12/2-9/2=3/2=1 1/2
2) 1 1/2:0,03=3/2*100/3=300/6=50
3) 3 1/20-2,65=61/20-265/100=61/20-53/20=8/20=2/5
4) 2/5×4=8/5=1 3/5
5) 1 3/5+2/5=8/5+2/5=10/5=2
6) 2,5+7 1/2=25/10+15/2=5/2+15/2=20/2=10
7) 50:2=х:10
25=х:10
х=25×10
х=250