6%x+19x=22.5 70%x-18%x=3.12 28%x+37%x=22.75 78%x=39
6%x+19x=22.5 70%x-18%x=3.12 28%x+37%x=22.75 78%x=39
6x+19x=22.5 x+17%=9.36 78%x=39 70%x-18%x=3.12 12x+53=137 28%
(X+X)+(X-X)+(X*X)+(X/X)=100
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
x+x=x+15
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+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
计算1/[x(x+3)]+1/[(x+3)(x+6)]+.+1/[(x+15)(x+18)]=?
int x=6; x += x -= x * x; printf("x = %d\n",x);
2x+3x+4x+5x+x+6x+7x=100
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
x-4/x-5 - x-5/x-6=x-7/x-8 - x-8/x-9求x=?