化简：使分式的分子、分母各项的系数都为整数：0.3x-0.1/0.5x²-0.2y+1=?2分之1/2x+2/3y=?

(0.3x-0.1)/(0.5x²-0.2y+1)
=(0.3x-0.1)×10/(0.5x²-0.2y+1)×10
=（3x-1)/(5x²-2y+10)
2分之1/2x+2/3y=
=(x/2+2y/3)/2
=(x/2+2y/3)×6/2×6
=(3x+4y)/12