deletions | additions       diff --git a/a) Number of blits.tex b/a) Number of blits.tex  index d99f37f..9504170 100644  --- a/a) Number of blits.tex  +++ b/a) Number of blits.tex 
...
\begin{equation}  \begin{split}  T(2^{n+1}) = 5 + 4\frac{5 * 4^n - 5}{3}\\  &= 5 + \frac{5 * 4^{n+1} - 4*5}{3}\\ 5*4}{3}\\  &= (5 \frac{5  * 4^(n+1) 4^{n+1}  +3 *  5 * 3  - 4 5  * 5) / 3\\ 4}{3}\\  &= (5 \frac{5  * 4^(n+1) 4^{n+1}  - 5) / 3 5}{3}  \end{split}  \end{equation}