Răspuns :
Î+R=15 C+Î=17 C+R=4
Î+R+C+Î+C+R=15+17+4
=36
Î+R+C=36:2=18
C=18-15=3
Î=17-3=14
R=15-14=1
D:14=3 rest 1
D=14x3+1=43(impartirea)
I+R=15
C+I=17
C+R=4
Adunam toate cele trei formule=i+r+c+i+c+r=15+17+4⇒2i+2c+2r=36
2(i+c+r)=36⇒i+c+r=36÷2⇒i+c+r=18
i+r=15⇒c=18-15⇒c=3
c+r=4⇒r= 4-3⇒r=1
c+i=17⇒i=17-3⇒i=14
C+I=17
C+R=4
Adunam toate cele trei formule=i+r+c+i+c+r=15+17+4⇒2i+2c+2r=36
2(i+c+r)=36⇒i+c+r=36÷2⇒i+c+r=18
i+r=15⇒c=18-15⇒c=3
c+r=4⇒r= 4-3⇒r=1
c+i=17⇒i=17-3⇒i=14