Răspuns :
56789+a+348921=673962 => a+405710=673962 => a=268252
b+348921+c+56789-c=890538 => b+405710=890538 => b=484828 (ai +c si -c care se anuleaza reciproc)
b+348921+c+56789-c=890538 => b+405710=890538 => b=484828 (ai +c si -c care se anuleaza reciproc)