6.4x-0.2x=6

6.4x-0.2x=6 x/x-2+x-9/x-7=x+1/x-1+x-8/x-6, x/x-2+x-9/x-7=x+1/x-1+x-8/x-6, 化简(2x-5)(3x+2)-6(x+1)(x-2),其中x=0.2 0.2x-6=1.6x+1 x=? 0.2(x+6)=3/7(x-8)-x/4 6x+0.4x-0.2x=4.5 x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? 设稻田有x公顷x-0.25x-0.2(x-0.25x)=6解得:x=10 int x=6; x += x -= x * x; printf(x = %d ,x); 解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6) 2x+3x+4x+5x+x+6x+7x=100 (x/x-2)+(2/x*2+2x)-(x+6/x*2-4)化简,=x^2/x(x-2)+(2x-4)/x(x^2-4)-(x^2+6x)/x(x^2-4)=x^2/x(x-2)-(x+2)/x(x-2)=(x-2)(x+1)/x(x-2)=(x+1)/x （X+X)+(X-X)+(X*X)+(X/X)=100 (x+7/x+6) +(x+9/x+8)=9x=(x+10/x+9) +(x+6/x+5) x-30-0.2x=0.5x x-0.2x=80 求x x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=?