Răspunsuri

2014-11-04T14:00:13+02:00
A+b=210
a-b=10
a+b+a+b=210+10
2a=220
a=220:2
a=110
110+b=210
b=210-110
b=100
proba:110+100=210
         110-100=10

2014-11-04T14:49:02+02:00
A+b=210
a-b=10
a=b+10
b+b+10=210
2b=210-10
b=200:2=>b=100
a=100+10=>a=110
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