3x-4/5=1/5（2/5+3/4）-x=11/20x-2/11-9/11=3又7/12

*-----------------------------------------------*| 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-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3) x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x 解九宫格题目（X为未知数）9 X 2 X 7 X 8 X XX X 4 X X 9 X 6 X1 3 X 5 X X X X 24 X X 8 5 X X 1 XX 8 9 4 X 1 6 7 XX 1 X X 3 6 X X 88 X X X X 2 X 3 6X 5 X 6 X X 9 X XX X 7 X 4 X 2 X 1 x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=? 写过程x(x-1)+2x(x+1)-3x(2x-5)-x(3x-2)+2x(2-x)=-5x(x-2)-4 x+5/x+1-3x-3/x+5=8x+28/x^2+4X-5-2（x+5）/（x+1)-(3x-3)/(x+5)=(8x+28)/(x^2+4X-5)-2 x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4 解下列方程!就三道!解下列方程.1、x/x-2 - 1-x²/x²-5x = 2x/x-3（x/x-2 - 1-x²不是一起的!）2、5x/x²+x-6 - 5-2x/x²-x-12=7x-10/x²-6x+8（5x/x²+x-6 - 5-2x不是一起的!）3、x-4/x-5 + x-8/x-9=x-7/x- x^5-x^4+x^3-x^2+x-1 求一个数独答案X X X 9 X X X 8 2 X 6 3 X X 1 4 X 99 X 8 X X X X X XX X X 6 7 X 3 X XX 4 6 X 5 X 2 9 XX X 7 X 2 3 X X XX X X X X X 7 X 17 X 4 3 X X 6 2 X6 3 X X X 7 X X X (x+1)(x+2)(x+3)(x+4)-(x^2+5x+3)(x^2+5x+7)=? 5x-3（2x+1）=6x-4（5-3x)求x 5x-3（2x+1）=6x-4（5-3x)求x (x+2)/(x+1)-(x+3)/(x+2)=(x+4)/(x+3)-(x+5)/(x+4) x-1/x-2-x-3/x-4=x-2/x-3-x-4/x-5怎么做? (x-3)/(x-2)-(x-2)/(x-1)=(x-5)/(x-4)-(x-4)/(x-3) 帮个忙呗~~~ 解方程：(x+3)/(x+2)-(x+4)/(x+3)=(x+5)/(x+4)-(x+2)/(x+1)