(1)20y+16+3y=24-5y-5还有20y+16+3y-3=24-5y-16

(1)20y+16+3y=24-5y-5还有20y+16+3y-3=24-5y-16 y(y-2)²-y(y+3)(y-5) y=1/2 化简求值 y(y-2)²-y(y+3)(y-5) y=1/2 化简求值 y(y-2)²-y(y+3)(y-5) y=1/2 化简求值 2(y-4)(3y+2)-5(-3y+7)(y+1),其中y=-1 解方程：3y^2-(2y+1)(y-1)=(y-5)(y+1) 解方程3y^2-(2y+1)(y-2)=(y-5)(y-1) 解方程：3y²-(2y+1)(y-2)=(y-5)(y+1) （96/y²16）+（3y-1/4-y）=（2y-1/y+4）-5 16y-2.5y-7.5y=5 y=? 3(y-3)-5(1+y)=7(y-1) y-(y-1)/2=1-(2y-3)/5 y''-5y'+6y=3x+1通解 y-y-1/2=3-y+2/5 y-1/y-2 - y-3/y-4=y-2/y-3 - y-4/y-5一共有四个分数哦~希望可以快一点~谢谢! 例X=1 y=21.X+Y=5 X-Y=15 2.2X+3Y=4 5X+6Y=7 3.X+3Y=5 3X+Y=-1 4.2X+Y=3 3X+5Y=11 5.4X+3Y=6 2X+Y=4 6.X+Y=180 X=3Y-10 7.3X-2Y=3 2X-Y=7 8.5X+3Y=7Y X+Y=45 9.3X+4Y=126X+8Y=24 X:6Y=1:4 10.X+Y=138 X-45=Y+53 11.X+Y=60 14Y=20X 12.2X+3Y=15.5 5X+6Y=35 13.X+Y=170 3 解3y+5/3y-6=1/2+5y-4/2y-4 4(2y+5)-3y=7(y-5)+4(2y+1)