Răspuns :
a+b+c+d=360
a=3k
b=4k
c=5k
d=6k
3k+4k+5k+6k=360
18k=360
k=360:18
k=20
a=3*20
a=60
b=4*20
b=80
c=5*20
c=100
d=6*20
d=120
a=3k
b=4k
c=5k
d=6k
3k+4k+5k+6k=360
18k=360
k=360:18
k=20
a=3*20
a=60
b=4*20
b=80
c=5*20
c=100
d=6*20
d=120