First you can either substitute or elimination.
So what I did was (2) -6x+2y=16 -------> -12x+4y=32
(-3) -4x+y=9 -------------------------------------> 12x-3y= -27
which would come to y=5 and if you put it back in both equations which would make x= -1
4.5 because if you oder the number from least to greatest then youll be left with four and five in the middle and 4.5 is what comes between those numbers