Răspunsuri

2014-03-19T13:11:22+02:00


a+b=248

a-20=b

=> a+a-20=248 => 2a=268 =>a=134 => b=114

2014-03-19T13:12:39+02:00
A |______a_____|
b |______a_____|..20..|

a+a+20=248
2xa=248-20
2xa=228
a=228:2
a=114
b=114+20
b=134
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