Răspunsuri

2014-06-15T11:59:54+03:00
A,b,c invers prop cu 1/3.1/5.1/5
 \frac{a}{ \frac{1}{1/3} } = \frac{b}{ \frac{1}{1/4} } = \frac{c}{ \frac{1}{1/5} } =k
 \frac{a}{3} = \frac{b}{4}=  \frac{c}{5} =k
a=3k
b=4k
c=5k
3*3k+4*4k-5*5k=9k+16k-25k=0