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2014-11-17T13:42:58+02:00
(a+b+c+d)-68514=392
a+b+c+d=68514-392
a+b+c+d=68122
 notam a=a ,b=a+1;c=a+2; d=a+3
a+a+1+a+2+a+3=68122
4a=68122-6
4a=68116
a=68116:4
a=17029
b=17029+1=17030
c=17029+2=17031
d=17029+3=17032