Răspuns :
a+b=280
280-35-61=245-61=184
184:2=92
92+35=127 primul numar
92+61=153 al doilea numar
Proba:127+153=280
280-35-61=245-61=184
184:2=92
92+35=127 primul numar
92+61=153 al doilea numar
Proba:127+153=280