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ritarozyr2016
@ritarozyr2016
July 2022
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выполнить решение № 870. а) 7 / 15 + 7 /30 + 4/5) : ( 2 - 1/3 - 1/2); б) ( 1/6+ 1/10 + 1/15) : (3/5 - 1/3 - 1/4)
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charme11
А) 7 / 15 + 7 /30 + 4/5) : ( 2 - 1/3 - 1/2)=
(14/30+7/30+24/30):(12/6-2/6-3/6)= 45/30:7/6= 45/30*6/7= 45/35= 9/7= 1 2/7
б) ( 1/6+ 1/10 + 1/15) : (3/5 - 1/3 - 1/4)= ( 5/30+3/30+2/30):(36/60-20/60-15/60) = 10/30:1/60= 1/3*60/1= 20
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kdid
А) (7 / 15 + 7 /30 + 4/5):( 2 - 1/3 - 1/2)
=(14/30+7/30+24/30):(12/6-2/6-3/6)=45/30:7/6=9/6*6/7=9/7=1 2/7
б) ( 1/6+ 1/10 + 1/15) : (3/5 - 1/3 - 1/4)=(5/30+3/30+2/30):(36/60-20/60-15/60)=10/30:1/60=1/3*60/1=60/3=20
3 votes
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Answers & Comments
(14/30+7/30+24/30):(12/6-2/6-3/6)= 45/30:7/6= 45/30*6/7= 45/35= 9/7= 1 2/7
б) ( 1/6+ 1/10 + 1/15) : (3/5 - 1/3 - 1/4)= ( 5/30+3/30+2/30):(36/60-20/60-15/60) = 10/30:1/60= 1/3*60/1= 20
б) ( 1/6+ 1/10 + 1/15) : (3/5 - 1/3 - 1/4)=(5/30+3/30+2/30):(36/60-20/60-15/60)=10/30:1/60=1/3*60/1=60/3=20