3(4y²+10y-7)/16y²-9=3y-7/3-4y+6y+5/3+4y
12y^2 + 30 - 21 / 16y^2-9=3y-7/3-4y+6y+5/3+4y 4y^2 + 30 - 30 =9y-2/3 4y^2=9y-2/3 -9y+4y=-2/3^2 -5y= -2/3 * 2/3 -5y= -4/9