Răspuns :
a+b=245
b=a+25 => a+b=245=> a+a+25=245=> 2a=245-25=> 2a=220=> a=220:2=> a=110
b=a+25=> b=110+25=> b=135
b=a+25 => a+b=245=> a+a+25=245=> 2a=245-25=> 2a=220=> a=220:2=> a=110
b=a+25=> b=110+25=> b=135
a|------|
b|------|--+25
suma partilor:245-25=220
aflam a 220:2=110
aflam b 110+25=135
b|------|--+25
suma partilor:245-25=220
aflam a 220:2=110
aflam b 110+25=135