2(2Y/3)-Y+3(4Y/3)=26
1.5y+8y-6y=2y-3
(2y-3)(-y+4)=(y-2)(y-5)-3y(y-7/3)解方程
(y^2-3y+2)(y^2+3y-2)=y^2(y+3)(y-3)
解方程3y^2-(2y+1)(y-2)=(y-5)(y-1)
解方程:3y^2-(2y+1)(y-1)=(y-5)(y+1)
解3y+5/3y-6=1/2+5y-4/2y-4
10y+2(7y-2)=5(4y+3)+3y怎么算
x+y/2+x-y/3=6,4(x+y)-3(x-y)=-20
{(x+y)/2+(x-y)/3=6 4(x+y)-3(x-y)=-20
4(x+y)-3(x-y)=-20,2/x+y+3/x-y=6
{3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1
4x-2y-6y*-y-3x+5y* *=2 就是平方