解方程x/2+y/3=2-x 2x/3-y/6=y/3+17/6
解方程x/2+y/3=2-x 2x/3-y/6=y/3+17/6
【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2=
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
6(x-y)-2(x+y)=14 3(x-y)+(x+y)=5
{3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1
若(x-y)/(x+y)=3 则(x+2y)/(6x-7y)等于
设实数x、y满足方程2x²+3y²=6y,求x+y的最大值
2x+y等于6,x+3y+|3x-y|等于19,解此方程.
解方程x+y+(x+y/2)=15 3x+5y+4(x+y/2)=62
已知关于方程2x-3y=7,求3(y-7)-6(x-y)