Răspuns :
a+b=245
b=a+25
a+a+25=245
2a+25=245
2a=245-25
2a=220
a=220/2
a=110
b=110+25=135
Verificam: 110+135=245
b=a+25
a+a+25=245
2a+25=245
2a=245-25
2a=220
a=220/2
a=110
b=110+25=135
Verificam: 110+135=245
a +b=245 b=a+25 rezulta ca a+25+a=245
2a+25=245 2a =220 a=110 b=135
2a+25=245 2a =220 a=110 b=135