7.2x+1.2=9x-1.
1.x+9/x+8- x+10/x+9=x+6/x+5- x+7/x+6;
1.x/9+x=62.x/x+1 + x+1/2x = 3
7.2X+1.2=9X-1.5怎么解方程
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
如果3x*x-x=1那么9x*x*x*x+12x*x*x-3x*x-7x+2001等于多少
1.2(x-2)-3(4x-1)=9(1-x) 2.11x+64-2x=100-9x 3.15-(8-5x)=7x+(4
解方程 1.2x+8.8x=78 2x+9x-1.1=0 6.9x-3.8x=46.5 7.8x+2.2x=43.6
解方程:1.2x/2x-1+x/x-2=2 2.1/2x+3+1/3-2x=4x/4x²-9
1.化简1/x(x-1)+1/(x-1)(x-2)+1/(x-2)(x-3)+…+1/(x-9)(x-10)= 一定要写
(X+X)+(X-X)+(X*X)+(X/X)=100
X 7 X - X 7 X = X 9 8 X 9 X - X 9 X = 4 9
x-4/x-5 - x-5/x-6=x-7/x-8 - x-8/x-9求x=?