Răspuns :
a+b=512
a-b=136
a,b=?
a=b+136(si acum linlocuim in suma)
b+136+b=512
2b+136=512
2b=512-136
2b=376
b=376:2
b=188
si acum inlocuim dinou in suma)\
a+188=512
a=512-188
a=424
a-b=136
a,b=?
a=b+136(si acum linlocuim in suma)
b+136+b=512
2b+136=512
2b=512-136
2b=376
b=376:2
b=188
si acum inlocuim dinou in suma)\
a+188=512
a=512-188
a=424