Answer:
5
Step-by-step explanation:
magnitude of the vector
=√(3²+4²)
=√25
=5
Five thousand four hundred and eighty-seven
The result follows directly from properties of modular arithmetic:

That is,

means we can write
for some integer
. Then

and taken mod 12, the first term goes away, so

etc
So the problem is asking you to combine equations, in this case the Y factor will cancel out so you will be left with the X factor and the total after you add both of the totals together,
6x-4y=16
5x+4y=6
6x-5x=x
16+6=22
x=22