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rdaraaxunova
@rdaraaxunova
July 2022
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Выполните действия:
1) (3/4 + 1/20) × 1/2=?
2) (7/12 - 1/3) × 16/19=?
3) (7 3/5 - 2 4/15) × 9/32=?
4) (11/24 + 1/6) × 1 3/5=?
5) (5 1/2 + 2 3/5) × 5/9=?
6) (7 - 2 5/16) × 4/25=?
Пж можно с объяснением! дарю 12 баллов!
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Answers & Comments
sasha62rus
Verified answer
1)(3/4+1/20)•1/2=(3/4•1/2)+1/20•1/2)=3/8+1/40=2/5
2)
(7/12-1/3)•16/19=3/12•16/19=4/19
3)
(7 3/5-2 4/15)•9/32=80/15•9/32=3/2=1,5
4)
(11/24+1/6)•1 3/5=15/24•8/5=1/1=1
5)
(5 1/2+2 3/5)•5/9=81/10•5/9=9/2=4,5
6)
(7-2 5/16)•4/25=(6 16/16-2 5/16)•4/25=4 11/16•4/25=75/16•4/25=3/4
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Answers & Comments
Verified answer
1)(3/4+1/20)•1/2=(3/4•1/2)+1/20•1/2)=3/8+1/40=2/52)
(7/12-1/3)•16/19=3/12•16/19=4/19
3)
(7 3/5-2 4/15)•9/32=80/15•9/32=3/2=1,5
4)
(11/24+1/6)•1 3/5=15/24•8/5=1/1=1
5)
(5 1/2+2 3/5)•5/9=81/10•5/9=9/2=4,5
6)
(7-2 5/16)•4/25=(6 16/16-2 5/16)•4/25=4 11/16•4/25=75/16•4/25=3/4