2,4=24/10=12/5
12a/5=3b=5c=k
a=5k/12=0,41(6)k
b=k/3=0,(3)k
c=k/5=0,2k
a-c=12
5k/12 - k/5 = 12
25k-12k=144
13k=144 =>k=144/13
a=720/13 x 1/12 = 4,(615384)
b=144/13 x 1/3 = 3,(692307)
c=144/13 x 1/5 = 2,2(153846)
Nasoale dimensiuni... Esti sigura ca ai scris corect problema ?!