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100000003146
@100000003146
July 2022
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Помогите пожалуйста.Срочнооо.a/b=2/3 b/c=2/5 НОК (а;с)=120 b=?
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iosiffinikov
3а=b
5b=2c
--------------
15a=2c
НОК (а;с)=120
НОК(2а,2с)=240
НОК(2а,15а)=30а
30а=240
а=8
b=24
c=60
Ответ: b=24
0 votes
Thanks 0
fare4ka90p3sq89
B=3a/2,
b=2c/5,
3a/2=2c/5,
4c=15a,
c=15a/4,
15a/4=120,
15a=480,
a=480/15,
a=32,
c=15*32/4=120,
через b=3a/2,
b=2c/5 :
b=2*120/5=48
или
b=3*32/2=48
0 votes
Thanks 0
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Answers & Comments
5b=2c
--------------
15a=2c
НОК (а;с)=120
НОК(2а,2с)=240
НОК(2а,15а)=30а
30а=240
а=8
b=24
c=60
Ответ: b=24
b=2c/5,
3a/2=2c/5,
4c=15a,
c=15a/4,
15a/4=120,
15a=480,
a=480/15,
a=32,
c=15*32/4=120,
через b=3a/2,
b=2c/5 :
b=2*120/5=48
или
b=3*32/2=48