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  • Utilizator Brainly
2014-02-17T18:23:52+02:00
A+83=2(b+49)=2b+98 ⇒ a=2b+98-83=2b+15
a+b=123 ⇒ 2b+15+b=123, 3b=123-15, b=36
a=123-36=87
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