解方程2/(x+8)+5/(x+9)=3/(x+15)+4/(x+6)

解方程2/(x+8)+5/(x+9)=3/(x+15)+4/(x+6)
解方程2/(x+8)+5/(x+9)=3/(x+15)+4/(x+6)

解方程2/(x+8)+5/(x+9)=3/(x+15)+4/(x+6)
移项5/x+9-4/x+6=3/x+15-2/x+8
x-6/(x+9)(x+6)=x-6/(x+15)(x+8)
x=6
-33/4

解不出来啊，最后约到
4x2（平方）+9x-198=0