X=13/5   Y=6/5 because , 2X - Y = 4 .....this is the first equation 3X + Y = 9.....this is the second equation   frome the first equation Y=9-3X  then substitute this equation with the second equation   2X-(9-3X)=4 2X-9+3X=4 5X=13 X=13/5 then substitute this X in Y=9-3X  Y=9-3(13/3) Y=(45-39)/5 Y=6/5