Răspuns :
a+b+c = 495
A+17=B
C+11=A
a+a+17+a-11=495
3a+6=495
3a= 489
a = 489 : 3
a= 163
b= 163-17
c= 163-11
A+17=B
C+11=A
a+a+17+a-11=495
3a+6=495
3a= 489
a = 489 : 3
a= 163
b= 163-17
c= 163-11
din date rezulta ca b+17+b+b+28=495
3b+45=495
3b=495-45
3b=450
b=450/3
b=90
a=90+17
a=107
c=107+11
c=118
3b+45=495
3b=495-45
3b=450
b=450/3
b=90
a=90+17
a=107
c=107+11
c=118