1.x-5/1x=32 2.3/1x+4/1x=15/7 3.(9/8-12/5)x=34 4.x乘(1-8/3)=3/
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1.x-5/1x=32 2.3/1x+4/1x=15/7 3.(9/8-12/5)x=34 4.x乘(1-8/3)=3/5
朋友 你的分数表示错了 5分之1应该表示成:1/5
以下是我把你的分数该过来的过程,明白请采纳,有疑问请追问
1.x-1/5x=32
(1-1/5)x=32
(5/5-1/5)x=32
4/5x=32
x=32*5/4
x=40
2.1/3x+1/4x=7/15
(1/3+1/4)x=7/15
(4/12+3/12)x=7/15
7/12x=7/15
x=7/15*12/7
x=4/5
3.(8/9-5/12)x=34
(32/36-15/36)x=34
17/36x=34
x=34*36/17
x=72
4.x乘(1-3/8)=5/3
(3/3-3/8)x=5/3
-5/8x=5/3
x=5/3*(-8/5)
x=-3/5*8/5
x=-24/25
以下是我把你的分数该过来的过程,明白请采纳,有疑问请追问
1.x-1/5x=32
(1-1/5)x=32
(5/5-1/5)x=32
4/5x=32
x=32*5/4
x=40
2.1/3x+1/4x=7/15
(1/3+1/4)x=7/15
(4/12+3/12)x=7/15
7/12x=7/15
x=7/15*12/7
x=4/5
3.(8/9-5/12)x=34
(32/36-15/36)x=34
17/36x=34
x=34*36/17
x=72
4.x乘(1-3/8)=5/3
(3/3-3/8)x=5/3
-5/8x=5/3
x=5/3*(-8/5)
x=-3/5*8/5
x=-24/25
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
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
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
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
(X+2)/(X+1)-(X+4)/(X+3)=(X+6)/(X+5)-(X+8)/(X+7)
解方程 x+2/x+1+x+8/x+7=x+6/x+5+x+4/x+3
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
已知x=2π+1求 |x-1|+|x-2|+|x-3|+|x-4|+|x-5|+|x-6|+|x-7|+|x-8|+|x