3X+6(8-X)+2Y+7(8-Y)=59,进而得到3X+5Y=45
3X+6(8-X)+2Y+7(8-Y)=59,进而得到3X+5Y=45
【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2=
已知:3x=8y.求(1)x+y/y (2)2x+3y/x-2y
1.((y+2x)(-2x+y)+4(x+2y)^2)/3y 2.(2(x-y)^3-8(x-y)^2(x+y)+6y(
x^8-x^7y+x^6y^2-x^5y^3+x^4y^4-x^3y^5+x^2y^-xy^7+y^8
2(x-y)+3(x+y)2-5(x-y)-8(x+y)2-(x-y)
3x+2=y 5X+4=Y 7X+6=Y 9X+8=y 11x=y要如何计算
3x+2=y 5x+4=y 7x+6=y 9x+8=y 11x=y
y-3x=2,y-5x=4,y-7x=6,y-9x=8,y-11x=0方程组,
3x+2=y 5x+4=y 7x+6=y 9x+8=y 11x=y 联立方程 有的话
若(x-2)*2+15y-11=0,求-3(2x-y)-{7x-〔6x+2y-(10x-8y)〕
2X+Y+Z=10,X+2Y+Z=-6,X+Y+2Z=8 5X+4Y-3Y=13,2X-3Y+7Z=19,3X-Y=2X