1/3[3y-(10-7y/2)]-1/6[2y-(2y+2/3)]=y/2-1要过程

y (3y^2+8y-3)-6y(3y+2y-1)+9y [T,Y]=ode45(@rigid,[0 1],[rand(15,1)]);plot(T,Y(:,1),'-',T,Y(:,2),'-.',T,Y(:,3),'.',T,Y(:,4),'-',T,Y(:,5),'-.',T,Y(:,6),'.',T,Y(:,7),'-',T,Y(:,8),'-.',T,Y(:,9),'.',T,Y(:,10),'-',T,Y(:,11),'-.',T,Y(:,12),'-.',T,Y(:,13),'.',T,Y(:,14),'-',T,Y(:,15),'.') 2(y-4)(3y+2)-5(-3y+7)(y+1),其中y=-1 (y-4)(3y+2)-(3y-7)(2y+1),其中y=4/3 通分 y+3/y*y-6y+9,1/2y+6,y-1/y*y-9 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 1/3（3y-10-7y/2）-1/2（2y-2y+2/3）=y/2-1 求y=( )/是分数线 （y+1)分之（2y+3)=（3y+4）分之（6y+7） 4（5—2y)+7(y+1)=3(4y-1)+17求y 4*（5—2y)+7(y+1)=3(4y-1)+17求y 4(2y+5)-3y=7(y-5)+4(2y+1) x-y/7 - x+y/10 =1/2 2(x-y)-5(x+y)=3修改、、、、（x-y)/7-(x+y)/10=1/2 2(x-y)-5(x+y)=3 已知：2x+y=6,x-3y=1 求7y(x-3y)(x-3y)-2(3y-x)(3y-x) 计算:1/(x-y)-1/(x+y)-2y/(x^2+y^2)-4y^3/(x^4+y^4)-8x^7/(x^8+y^8) { x-y/7-x+y/10=1/2 {2(x-y)+5(x+y)=3 { x-y/7-x+y/10=1/2 {2(x-y)+5(x+y)=3