8(x-12.5)=6.4
x-x/5=2.4 (求未知数x) 12÷5%x=8 4x+x=12.5
8(x-12.5)=6.4
( 3.6-1)x=3.25 12.5x-0.9x=52.2 x-0.72x=0.336 8x-0.5x=37.5 0.
解方程:(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
解方程1/x(x+1)+1/(x+1)(x+2)+...+1/(x+8)(x+9)=2x+3/x(x+9)
解方程:1\x(x+1)+1\(x+1)(x+2)+.+1/(x+8)(x+9)=2x+3\x(x+9)
解方程.(5x/x²+x-6)+(2x-5/x²-x-12)=7x-10/x²-6x+8
3X+(X+2)+(X+1)*(X-1)=4*(X²+8)
(x+10)+(X+8)+X\3=36
6x+4x(8-x)=38
4x+3.6=8x-4.8 (求x)