\[\boxed{\text{44.}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[x \cdot 9 = 270\]
\[x = 270\ :9\]
\[x = 30.\]
\[x\ :8 = 80\]
\[x = 80 \cdot 8\]
\[x = 640.\]
\[164 - x = 80\]
\[x = 164 - 80\]
\[x = 84.\ \]