m(A)+m(B)+m(C)+m(D)=360(din formula)
Daca A,B,C,D dp 2,3,6,9 atunci
A supra 2= B supra 3= C supra 6= D supra 9=k
A supra 2=k=) A=2k=2inmultit la 18=36
B supra 3=k=) B=3k=54
C supra 6=k=) C=6k=108
D supra 9=k=) D=9k=162
A+B+C+D=360
2k+3k+6k+9k=360
20k=360
k=360impartit la 20
k=18
