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.

### Statistics:

 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