0.75x-5x%=17.5
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!)+.
3/4x-5x%=17.5 2x-(x+1)/2=x+1/2
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
X-5X%=17.5
3/4X=17.5+5x%
3/4X-5X%=17.5,
5x-3.5+2x=17.5
0.75x-1/2x=-5;3x+5=4x+1;3X+5=4X+18;1-7x=x-7;9x+8-7x=3x;-(x-2
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
5x+2x=33.6,7x-4x=0.75,2x+7x+2.1=12,56x-32x-119=361,解方程
2x+3x+4x+5x+x+6x+7x=100
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)