7x-12(5/3-1/2)=8-2/3(x-9)
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7x-12(5/3-1/2)=8-2/3(x-9)
![7x-12(5/3-1/2)=8-2/3(x-9)](/uploads/image/z/6247458-18-8.jpg?t=7x-12%285%2F3-1%2F2%29%3D8-2%2F3%28x-9%29)
7x-12(5/3-1/2)=8-2/3(x-9)
7X-20+6=8-2X/3+6
7X-14=14-2X/3
21X-42=42-2X
23X=84
X=4
再问: 7x-12(5/3x-1/2)=8-2/3(x-9)���ˣ��Ǻǣ����˸�x
7X-20+6=8-2X/3+6
7X-14=14-2X/3
21X-42=42-2X
23X=84
X=4
再问: 7x-12(5/3x-1/2)=8-2/3(x-9)���ˣ��Ǻǣ����˸�x
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
y=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10)的导数在x=1
设函数f(x)=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10),
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
1x()+2x()+3x()+4x()+5x()+6x()+7x()+8x()加9x()+10x()=1980
1X?+2X?+3X?+4X?+5X?+6X?+7X?+8X?+9X?+10X?=1980求?是多少
已知1+x+x^2+x^3=0,求x+x^2+x^3+x^4+x^5+x^6+x^7+x^8的值
x+2/x+3-x+1/x+2=x+8/x+9-x+7/x+8
(3-x)/(1-x)-(5-x)/(7-x)+(x^2-x)/(x^2-8x+7)=1
解方程:(x+3)/(x+2)-(x+5)/(x+4)=(x+7)/(x+6)-(x+9)/(x+8)