Mathematical and Physical Journal
for High Schools
Issued by the MATFUND Foundation
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Problem C. 1290. (April 2015)

C. 1290. Solve the equation \(\displaystyle 2xy+2x-5y=40\) on the set of pairs of integers \(\displaystyle (x;y)\).

(5 pont)

Deadline expired on May 11, 2015.


136 students sent a solution.
5 points:92 students.
4 points:27 students.
3 points:6 students.
2 points:4 students.
1 point:5 students.
0 point:2 students.

Problems in Mathematics of KöMaL, April 2015