解方程:(x+8)/(x+7)+(x+10)/(x+9)=(x+7)/(x+6)+(x+11)/(x+10
问题描述:
解方程:(x+8)/(x+7)+(x+10)/(x+9)=(x+7)/(x+6)+(x+11)/(x+10
答
-8
原式化简
(x+8)/(x+7)-(x+7)/(x+6)=(x+11)/(x+10)-(x+10)/(x+9)
(X+6)(X+7)=(X+9)(X+10)
13X+42=19X+90
X=-8