2x=(5x-24)7／16 2/5x=(x-24)7/16

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2x=(5x-24)*7／16 2/5x=(x-24)*7/16
(3x-24)/2x=9/7

2x=(5x-24)*7／16
2x=35/16x-21/2
3/32x=21/2
x=7/16
2/5x=(x-24)*7/16
2/5x=7/16x-21/2
32/80x=35//80x-21/2
3/80x=21/2
x=7/40
(3x-24)/2x=9/7
3x-24=18/7x
3/7x=24
x=56

2x=(5x-24)*7／16 2/5x=(x-24)*7/16 x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? (x+12)(x-2)+(x+7)(x+8)-(x+5)(x-10),其中x=2 2x+3x+4x+5x+x+6x+7x=100 7x-24=x^2+5x 13x-5x(2x-3.3)=24 16-5x（x+1.2)=2x-4 方程解 x+(x+24)+(x+4)/2=7x X-5+8*X=7*X-2*X-1 (2x-1)/(x-1)(x-2)=(x-5)/(x-2)(x-3) x/2x^2-11x-21=(x+7)/x^2-1 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!)+. 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 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