Question

{a,b,c} invers prop{2/5,4/13,6/25}

a+b+c=119​

Answer 1

Răspuns:

Explicație pas cu pas:

a/5/2=b/13/4=c/25/6=(a+b+c)/(5/2+13/4+25/6)

5/2+13/4+25/6=(5×6+13×3+25×2)/12=(30+39+50)/12=119/12

a/5/2=b/13/4=c/25/6=119/119/12=12

a/5/2=12     ⇒a=12×5/2=6×4=30

b/13/4=12    ⇒b=12×13/4=3×13=39

c/25/6=12   ⇒c=12×25/6=2×25=50