3x+(100-x)/3=1003x+(100-x)/3=100 如题,求此方程之解,感激不尽

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3x+(100-x)/3=1003x+(100-x)/3=100 如题,求此方程之解,感激不尽

3x+(100-x)/3=1003x+(100-x)/3=100 如题,求此方程之解,感激不尽
3x+(100-x)/3=100
3x+(100-x)/3=100
如题,求此方程之解,感激不尽

3x+(100-x)/3=1003x+(100-x)/3=100 如题,求此方程之解,感激不尽
3x+(100-x)/3=100
3x+100/3-x/3=100
(3-1/3)x+100/3=100
8/3*x=200/3
x=25

两边同乘以3
9X+（100-X）=300
8X=200
X=25

3×3x+3×（100-x）/3=100×3
9x+（100-x）=300
9x+100-x=300
9x-x=300-100
8x=200
x=25

x-2x+3x-4x+5x.+99x-100x=25求解 2x+3x+4x+5x+x+6x+7x=100 3x=x+100 x=? x+2x+3x+.+100x 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!)+. （X+X)+(X-X)+(X*X)+(X/X)=100 X+100=3X 3x=100+x 3x=100+x 3x=x+100 3x=x+100 解方程：2x+4x+6x...+100x=1-(x+3x+5x+...+99x) 1X+2X+3X…+98X+99X+100X=50500X X等于多少? 1/X(X+1)+1/(X+1)(X+2)+1/(X+2)(X+3).+1/(X+99)(X+100)= 1x+2x+3x+4x+5x+6x+7x…+99x=100 100×2x+10x+3x+216=100×3x+10×2x+x 解方程:x-2x+3x-4x+...+99x-100x=25 解方程：x-2x+3x-4x+.+99x-100x=25