Răspuns :
(245+1745)-m=873
1990-m=873
m=1990-873
m=1117
(245+1745)-1117=873
n-(8740-2903)=157
n-5837=157
n=5837+157
n=5994
5994-(8740-2903)=157
1990-m=873
m=1990-873
m=1117
(245+1745)-1117=873
n-(8740-2903)=157
n-5837=157
n=5837+157
n=5994
5994-(8740-2903)=157