4x-3y/x-2y÷6y-8x/y-2x

4x-3y/x-2y÷6y-8x/y-2x [2(x-y)^5-8(x-y)^2(x+y)+6y(x-y)^2]÷2(x-y)^2[2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2]÷2(x-y)^2 【2(x-y)(x-y)(x-y)-8(x-y)(x-y)(x+y)+6y(x-y)(x-y)]/2(x-y)(x-y) 81/8*(-x-y)^6*(x-y)^3*4/9(x+y)^4*(y-x)^2 [(x+y)(x-y)-(x-y)²+2y(x-y)]÷4y 【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2= x²/xy-x/y 3x/4x+y - x-2y/4x+y (1-y/y+x)÷x/y²-x² 1.（（y+2x)(-2x+y)+4(x+2y)^2)/3y 2.（2(x-y)^3-8(x-y）^2(x+y)+6y(x-y)^2）/2（x-y)^2 化简3x-2/(x+y)[(x+y)/3x-x-y]÷(x-y)/x 计算：(x-y)^7÷(y-x)^6+(-x-y)^3÷(x+y)^2 计算(x-y)^7÷(y-x)^6+9-x-y)^3÷(x+y)^2 18(x+y)^8(x-y)^7÷[3(x+y)^3(x-y)^3]^2 [12(x+y)^3+3(x+y)(x-y)^2]÷6(x+y) 3(x-y)^2-7(x-y)+8(y-x)^2+6(y-x)合并同类项. （x+y）/2- x-y/2=6 3(x+y)=4(x-y) x+y/3+x-y/2=6 4(x+y)-2(x-y)=40 {3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1 x+y/2+x-y/3=6,4(x+y)-3(x-y)=-20