Question

afla valorilor numerelor a b si c stiind ca a+b+c=217×85 ,a+b=156×78,c-b=276

Answer 1

a+b+c=217x85=18445
a+b=156x78=12168
c-b=276
12168+c=18445
c=18445-12168
c=6277
6277-b=276
b=6277-276
b=6001
a+6001=12168
a=12168-6001
a=6167
proba:6167+6001+6277=12168+6277=18445