Question 3427
n/17 = x + 5/17 --> n = 17x + 5 --eqn1


n/23 = y + 14/23 --> n = 23y + 14 --eqn2


Subtract these 2, to give 17x+5 - (23y+14) = 0
17x+5-23y-14 = 0
17x-23y-9 = 0
17x-23y = 9


which is your answer B.


jon.