5y+1/6=9y+1/8-1-y/3

(3y-1)/4-1=(5y-7)/6 9y-3-3=10y-14 9y-10y=-14+3+3 -y=-8 y=8 (5Y+1)/6=(9Y+1)/8-(1-Y)/3 (5y+1)÷6=(9y+1)÷8-(1-y)÷3 5y+1/6=9y+1/8-1-y/3 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) (5y+1)+ (1-y)= (9y+1)+ (1-3y); ｛4/(x+y)+6/(x-y)=3 ｛9/(x-y)-1/(x+y)=1 解3y+5/3y-6=1/2+5y-4/2y-4 微分方程(1)(y'')^2+5y'-y+x=0;(2)y''+5y'+4y^2-8x=0;(3)(3x+2y)dx+( x+y=3 x+2y=9 3/x+1=y y-x=3 y=2x-3 y-3x=1 2(x+1)-y=6 7x-5y=-9 (5y+1)除以6等于(9y+1)除以8-（1-y)除以3 y等于多少