4-5/8x=7/8

x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? *-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X || x-4/x-5 - x-5/x-6=x-7/x-8 - x-8/x-9求x=? x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=? x-8/x-4=2-x-5/x-7 初二分式方程x+3/x+4+x+8/x+9=x+4/x+5+x+7/x+8解(x+3/x+4)+(x+8/x+9)=(x+4/x+5)+(x+7/x+8) 解分式方程：(x-4)/(x-5)+(x-8)/(x-9)=(x-7)/(x-8)+(x-5)/( x-6) 解方程:x-4/x-5 -x-5/x-6=x-7/x-8 -x-8/x-9 x-4/x-5-x-7/-x-8=x-5/x-6-x-8/x-9 解方程：(x-4)/(x-5)-(x-5)/(x-6)=(x-7)/(x-8)-(x-8)/(x-9) 解分式方程（X-4)/(X-5)-(X-5)/(X-6)=(X-7)/(X-8)-(X-8)/(X-9) 求方程解x-5/x-4+x-9/x-8=x-8/x-7+x-6/x-5 x-4／x-5-x-5／x-6=x-7／x-8-x-8／x-9求大神帮助 解因式方程：x-4/x-5+x-8/x-9=x-7/x-8+x-5/x-6 解方程(x-4)/(x-5)+(x-8)/(x-9)=(x-7)/(x-8)+(x-5)/(x-6) (x-4)/(x-5) + (x-8)/(x-9)=(x-7)/(x-8) + (x-5)/(x-6) x-4/x-5 -x-5/x-6 =x-7/x-8 -x-8/x-9 (X+5)/(X+4) ＋(X+8)/(X+7 )=(X+7)/(X+6 )＋(X+6)/(X+5 )