(8/9-5/12)x=34 x*(1-3/8)=5/3
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(8/9-5/12)x=34 x*(1-3/8)=5/3
(8/9-5/12)x=34
(32/36-15/36)x=34
17/36x=34
x=34x36/17
x=72
x*(1-3/8)=5/3
5/8x=5/3
x=5/3x8/5
x=8/3
再问: 好难滴数学题:126*3/4
再答: 126*3/4 =63x3/2 =189/2
再问: 问你一件衣服有126元,这件衣服比原价便宜了1/4,现价是多少
再答: 126x(1-1/4) =126*3/4 =63x3/2 =189/2 =94.5元
(32/36-15/36)x=34
17/36x=34
x=34x36/17
x=72
x*(1-3/8)=5/3
5/8x=5/3
x=5/3x8/5
x=8/3
再问: 好难滴数学题:126*3/4
再答: 126*3/4 =63x3/2 =189/2
再问: 问你一件衣服有126元,这件衣服比原价便宜了1/4,现价是多少
再答: 126x(1-1/4) =126*3/4 =63x3/2 =189/2 =94.5元
(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+9x+10x+11x+12x+13x+14x+15x=550
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),
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
分式方程:x-7/x-9+x-3/x-5=x-4/x-6+x-6/x-8(要过程、检验)
x+1分之x+2减去x+3分之x+4=x+5分之x+6减去X+7分之x+8 (解方程)
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
解方程:(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)
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