8.5-x=3.

8.5-x=3. X+13%X-28%X=3. 4x+x=3. 11.1x+x=3. 3.6x-x=3. x+15%x=3. 解方程 x-1%x=19.8x-40%x=15x+25%x=2.550%x+x=31.5x-15%x=8.5 3道简单的分式方程,1.3/(1-x^) = 2/(1+2x+x) - 5/1-2x+x^2.5x/(x^+x-6) + (2x-5)/(x^-x-12) = (7x-10)/(x^-6x+8)3.(x+1)/(x+2) + (x+6)/(x+7) = (x+2)/(x+3) + (x+5)/(x+6) （X+X)+(X-X)+(X*X)+(X/X)=100 X(X的2次方-6X-9)-X(X的2次方-8X-15)+2X(3-X),其中X=1/3. 先化简,再求值 8.5x()+3x()-1.5x()=7.5 ()=() 已知函数f(x)=2/x x≥2 (x-1)3.x 12.75X—8.5X×4=0.925.求X. 函数f(x)与g(x)相等.f(x)=x-1,g(x)=x^2/x-11.f(x)=x-1,g(x)=x^2/x-1 2.f(x)=x^2 g(x)=(根号x)四次方3.f(x)=x^2 g(x)=3根号x六次方 1.(x*2-3x+3)/(x*2-3x+2)-(x*2-5x+7)/(x*2-5x+6)-1/(x*2-4x+3)2.1/x(x+1)+2/(x+1)(x+3)+3/(x+3)(x+6) 3.已知：x*2-3x+1=0,求x*2+1/x*2. 5x-3.7=8.5,求x 8.5X---8X=0.2 方程 7x-3.8x×2=8.5