Răspuns :
a+b+c=800
a=283
b=a+54
c= ?
b=283+54
b=337
283+337+c=800
620+c=800
800-620
c=180
a=283
b=a+54
c= ?
b=283+54
b=337
283+337+c=800
620+c=800
800-620
c=180