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aflati numerele a si b stiind ca a+a+b=594 si a+b=445

Răspuns :

a+a+b=594
a+b=445
=>a=594-445
a=149
=>b=445-149
b=296
a+b=445
a=445-b
445-b+445-b+b=594
-b=-296, b=296
a=149