align環境を使用しようとしたのですが，エラーがでてしまいます。

Runaway argument?
 
! Paragraph ended before \align was complete.
<to be read again> 
                   \par 
l.91 
     
? 
! Emergency stop.
<to be read again> 
                   \par 
l.91 
     
End of file on the terminal!

 
Here is how much of TeX's memory you used:
 8045 strings out of 95597
 81062 string characters out of 1191919
 247771 words of memory out of 1500001
 11028 multiletter control sequences out of 10000+50000
 18179 words of font info for 74 fonts, out of 600000 for 2000
 14 hyphenation exceptions out of 2000
 50i,15n,41p,326b,869s stack positions out of 1500i,500n,5000p,200000b,5000s
No pages of output.

ソース

\begin{align}
\hspace{-8mm} \left( -\bunsuu{1}{2}x+\bunsuu{1}{8}\right)\times 24 & =&\left( -\bunsuu{1}{3}x-\bunsuu{1}{4} \right) \times 24\vspace{1mm}\\
\hspace{12mm}-12x+3&=&-8x-6\\
\hspace{8mm}-12x+8x &=& -6-3\\
\hspace{17mm}\bunsuu{\Teisei{-4}{1}x}{\Teisei{-4}{1}}&=&\bunsuu{-9}{-4}\\
\hspace{28mm}x&=&\bunsuu{9}{4}
\end{align}

参考にしている書籍は奥村さんの美文書作成入門です。

▼関連発言
│
└◆113:=揃え [kimu] 10/29 11:53
　└◆114:Re:=揃え [田中徹] 10/29 12:04
　　└◆115:Re[2]:=揃え [kimu] 10/29 12:50
　　　└◆116:Re[3]:=揃え [田中徹] 10/29 14:09
　　　　└◆120:Re[4]:=揃え [kimu] 10/30 01:24
　　　　　└◆122:Re[5]:=揃え [tDB] 10/30 09:12<-last