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2014-10-07T17:23:47+03:00
 a+b+c=519 si b+c=119 calculati


Il aflam pe a ( inlocuim b+c in a+b+c)
a+119=519 -> a = 519-119 ->a = 400

a-(b+c) = 400-119 = 281

b+c-19= 119-19=100
a+b+c-500 = 519-500=19




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