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a fost răspuns

se stie ca a+b+c=38
b>a cu 5
c >b cu 9
Afla 2a= 5b= 10c=

Răspuns :

b=a+5
c=b+9=a+5+9=a+14
a+b+c=38
a+a+5+a+14=38
3a+19=38
3a=38-19
3a=19
a=19/3

b=19/3+5=19/3+15/3=34/3
c=19/3+14=19/3+42/3=61/3
2a=2×19/3=38/3
5b=5×34/3=170/3
10c=10×61/3=610/3

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