x÷2+8.2=2.5x-1.6
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x÷2+8.2=2.5x-1.6
x÷2+8.2=2.5x-1.6
x÷2+8.2=2.5x-1.6
2x=9.x=4.9
x÷2+8.2=2.5x-1.6
4×(0.8+X)=72 8X+2X=31.4 (X+1.8)÷4=2.5 3X+5X-4X=1.6 解方程
化简 [3x/(x+2)-x/(x=2)]÷x/(x^2-4)化简 [3x/(x+2)-x/(x-2)]÷x/(x^2-4
x÷0.8=6×1.6 45÷x=2.5×2 3.6x-x=1.3×4x÷0.8=6×1.6 45÷x=2.5×2 3.6x-x=1.3×4
2*x*x+2.5x=13 x=?
设f(x)=x+2÷x(x
(x²-x+1)÷(x²-x-1)=(x²+x)÷(x²+x-2)解方程
X^2-3X-2=0,求( x - 2x-1/x )÷(x-1)/(x^2-2x)
解方程:(x-3)÷2=7.5 3x+x=30 15x+x=40 2.5x-6=18.5 3x+7=59.2
8x-5.5x=7.57.2x÷3.6=2 3x+6x-8x=0.7 12x-2x-5x=4.512x-x=0 5x+x=1.8 3.2x+1.8x=64.8x-0.8x=6 6.3-0.3x=9.6 8.6x-8.5x=0.720x-2x=36 9x+6x=4.5 18x-12x=5.42x-1.6x=3.6 18x+3x=7×6 1.2x-0.5x=0.71.3x+2.7x=1 4x-3.2x=6.4 0.8x+3.2x+3x=562.8x-2x=7.2
f(x)=x^2+x (x
接下列方程.前3题验算.x+5.6=9.4 2x=1.6 x÷12=6 x-4=12.6 x÷2.5=6 3.08+x=3.8 (x不是乘号)
2x^2-4x/x+2`x^2+2x/x^2-4x+4÷x/3x-6,其中x=根号3/2
2x^2-4x/x+2`x^2+2x/x^2-4x+4÷x/3x-6,其中x=根号3/2
x(2-1/x)+x/(x^2-2x)÷(3-x)/(x^2-4)2.2/3+x/(3x-1)=1/9x-3
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)
先化简再求值[3x/(x+2)-x/(x-2)]÷2x/(x^2-4)x=2010
化简求值:(3x/x+2-x/x-2)÷2x/x^2-4,x=-3