8X-30=3X+20 = = =
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X-30%X+8-X=20
(16x-13)/(4x-3)-(20x-24)/(4x-5)=(32x-30)/(8x-7)-(40x-43)/(8x-9)求x
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
(16x-13)/(4x-3)+(40x-43)/(8x-9)=(32x-30)/(8x-7)+(20x-24)/(4x-5)....
(16x-13)/(4x-3)+(40x-43)/(8x-9)=(32x-30)/(8x-7)+(20x-24)/(4x-5)
(X+X)+(X-X)+(X*X)+(X/X)=100
(x+30)*(x-18)=x*x
30%x=50%x-20x
x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=?
X-X/12-X/7-X/8-X/4-X/20-X/5-30-120-300=50解方程
X(x平方-6x-9)-x(x平方-8x-15)+2x(3-x)其中x=-六分之一
3X+30+X+X-15=?
x+35=(x+3x)*30%
(x^2-3x+1) (x^2+3x+2)( x^2-9x+20)= -30求X
3x+5x=8x.
4,8-x=3x(x
8x(x-5)=3x
用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+.