3X+(100-X)/3=100 9X+100-X=300 8X=200 X=25
(X+X)+(X-X)+(X*X)+(X/X)=100
3X+(100-X)/3=100 9X+100-X=300 8X=200 X=25
2x+3x+4x+5x+x+6x+7x=100
x-2x+3x-4x+...+99x-100x=25
3x=x+100 x=?
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
3x=100+x
1X+2X+3X…+98X+99X+100X=50500X X等于多少?
1x+2x+3x+4x+5x+6x+7x…+99x=100
解方程:2x+4x+6x...+100x=1-(x+3x+5x+...+99x)
X+X+X+X+X+X+100X=1690 问:X等于多少
已知 X=4- 根号3 求 (X*X*X*X-6X*X*X-2X*X+18X+23) / (X*X-8X+15)的值