3/5x-5=10 2.5x=12*7.5 x:0.1=5:0.8
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3/5x-5=10 2.5x=12*7.5 x:0.1=5:0.8
得数:x=25 得数:x=36 得数:x=5/8
![](http://img.wesiedu.com/upload/4/d7/4d742ab96a7ed9fa1da851132e3e94df.jpg)
得数:x=25 得数:x=36 得数:x=5/8
![](http://img.wesiedu.com/upload/4/d7/4d742ab96a7ed9fa1da851132e3e94df.jpg)
![3/5x-5=10 2.5x=12*7.5 x:0.1=5:0.8](/uploads/image/z/2876248-64-8.jpg?t=3%2F5x-5%3D10+2.5x%3D12%2A7.5+x%3A0.1%3D5%3A0.8)
3/5x-5=10
3/5x=10+5
3/5x=15
x=15÷3/5
x=25
2.5x=12*7.5
2.5x=90
x=90÷2.5
x=36
x:0.1=5:0.8
0.8x=0.1×5
0.8x=0.5
x=0.5÷0.8
x=5/8
3/5x=10+5
3/5x=15
x=15÷3/5
x=25
2.5x=12*7.5
2.5x=90
x=90÷2.5
x=36
x:0.1=5:0.8
0.8x=0.1×5
0.8x=0.5
x=0.5÷0.8
x=5/8
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!)+.
3/5x-5=10 2.5x=12*7.5 x:0.1=5:0.8
(x+12)(x-2)+(x+7)(x+8)-(x+5)(x-10),其中x=2
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
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),
解方程3x=x+4,2.6x-8=2.4x,4x+12=10x+3 ,7x=12-×,2.5x=2x+4,5x+3=6x
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
2x+3x+4x+5x+x+6x+7x=100
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
已知3x*x-x=1,求6x*x*x+7x*x-5x+2000