Răspuns :
a+b+c=660
c=2b
b=3a =>c= 6a => a+3a+6a=660 10a= 660 a= 66
b=3x66= 198 c= 2x198=396
c=2b
b=3a =>c= 6a => a+3a+6a=660 10a= 660 a= 66
b=3x66= 198 c= 2x198=396