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1108200412
@1108200412
July 2022
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представление число 123 в виде суммы трех слагаемых x,y и z так,чтобы x:y=2:5, а y:z=3:4
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lymovroma
X+y+z=123
x/y=2/5
x=2y/5
y/z=3/4
z=4y/3
2y/5+y+4y/3=123
(6y+15y+20y)/15=123 (*15)
41y=1845
y=1845/41=45
x=45*2/5=90/5=18
z=4*45/3=180/3=60
проверка... 18+45+60=123
123=123
18/45=2/5
45/60=3/4
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Answers & Comments
x/y=2/5
x=2y/5
y/z=3/4
z=4y/3
2y/5+y+4y/3=123
(6y+15y+20y)/15=123 (*15)
41y=1845
y=1845/41=45
x=45*2/5=90/5=18
z=4*45/3=180/3=60
проверка... 18+45+60=123
123=123
18/45=2/5
45/60=3/4