X+8/X=40
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X+8/X=40
X+8/X=40
X+8/X=40
XX-40X+8=0,B方-4AC小于零,此题无解.
X+8/X=40
8x-4.8x=1.6x-40%x=247.6x+4.4x=156
x-40%x=
(16x-13)/(4x-3)-(20x-24)/(4x-5)=(32x-30)/(8x-7)-(40x-43)/(8x-9)求x
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
8x=9x×(x-40)
x^2- +40=(x-5)(x-8)
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
x/40+x/60+[20-(x/40+x/60)*8]÷40=x/40+(20-x)/8怎么解
20%=(X+4)/(50+X)x=?(50g*8%)+(x*40%)=(50+x)20%,x=?
15X+5=8X+40
x/40-2=X/8+3
(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-(1/5X+5)-(1/4x-7)]+(1/5X+5)+(1/5X+7)+1/8X=X最后答案等于X=40
(x+12)(x-2)+(x+7)(x+8)-(x+5)(x-10),其中x=2
(X+X)+(X-X)+(X*X)+(X/X)=100