MathDB

4

Part of 1991 Chile National Olympiad

Problems(1)

2x + 3y, 9x + 5y both divisible by 17 (Chile NMO 1991 P4)

Source:

11/20/2021
Show that the expressions 2x+3y2x + 3y, 9x+5y9x + 5y are both divisible by 1717, for the same values of xx and yy.
number theorydividesdivisible