Răspunsuri

2014-10-02T12:19:09+03:00
A+b+c=231
a-4=b-4+1=c+8+2
a=b+1
c=b-3-10=b-13
=>
(b+1)+b+(b-13)=231
3b=231-1+13=243
b=81
a=82
c=81-13
c=68

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