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София525
@София525
August 2022
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помогите решить! решите уравнение 2/9x=5/12,4/15y=2/5,3/5x=6,7/8y=14,3/7x=1целая 4/5,9/10y=4целых 1/2
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nikita1a
2/9х=5/12 3/7х=1 4/5
х=5/12:2/9=5/12*9/2 х= 9/5:3/7=9/5*7/3
х=15/8 х=21/5
2/9*15/8=5/12 3/7*21/5=1 4/5
5/12=5/12 1 4/5=1 4/5
4/15у=2/5 9/10у=4 1/2
у=2/5:4/15=2/5*15/4 у=9/2:9/10=9/2*10/9
у=3/2 у=5
4/15*3/2=2/5 9/10*5=4 1/2
2/5=2/5 4 1/2=4 1/2
3/5х=6
х=6:3/5=6*5/3
х=10
3/5*10=6
6=6
7/8у=14
у=14:7/8=14*8/7
у=16
7/8*16=14
14=14
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Answers & Comments
х=5/12:2/9=5/12*9/2 х= 9/5:3/7=9/5*7/3
х=15/8 х=21/5
2/9*15/8=5/12 3/7*21/5=1 4/5
5/12=5/12 1 4/5=1 4/5
4/15у=2/5 9/10у=4 1/2
у=2/5:4/15=2/5*15/4 у=9/2:9/10=9/2*10/9
у=3/2 у=5
4/15*3/2=2/5 9/10*5=4 1/2
2/5=2/5 4 1/2=4 1/2
3/5х=6
х=6:3/5=6*5/3
х=10
3/5*10=6
6=6
7/8у=14
у=14:7/8=14*8/7
у=16
7/8*16=14
14=14