Răspuns :
Răspuns:
Explicație pas cu pas:
a/4=b/5=c/7=k
a/4=k deci a=4k
b/5=k deci b=5k
c/7=k deci c=7k
4k+5k+7k=225 deci 16k=225
k=225/16
a=4k=4×225/16=225/4
b=5k=5×225/16=1125/16
c=7k=7×225/16=1575/16
Răspuns:
Explicație pas cu pas:
a/4=b/5=c/7=k
a/4=k deci a=4k
b/5=k deci b=5k
c/7=k deci c=7k
4k+5k+7k=225 deci 16k=225
k=225/16
a=4k=4×225/16=225/4
b=5k=5×225/16=1125/16
c=7k=7×225/16=1575/16