Simplify tables markup

- Markup is definitely simpler.
- Will not be built separately in a pdf anymore.
- Fixed some typo as well
- Relatively coherent look
- Can be better, some sizes are relatively arbitrary

book/tables/table-recipe-bakers-math.tex

@@ -1,12 +1,8 @@
-\input{./vars}
-
-\begin{document}
-\begin{tabular}{lrr}
+\begin{tabular}{@{}lrr@{ = }l@{}}
 \toprule
-\textbf{Ingredient} & \multicolumn{1}{l}{\textbf{Baker's math}} & \multicolumn{1}{l}{\textbf{Calculated value}} \\ \midrule
-Flour               & 100\%                                      & 1400*1 = 1400g                               \\ \midrule
-Water               & 60\%                                       & 1400*0.6 = 840g                              \\ \midrule
-Sourdough starter   & 10\%                                       & 1400*0.1 = 140g                              \\ \midrule
-Salt                & 2\%                                        & 1400*0.02 = 28g                              \\ \bottomrule
+\thead{Ingredient} & \thead{Baker's math} & \multicolumn{2}{c}{\thead{Calculated value}} \\ \midrule
+Flour               & 100\%   & $1400 \times 1$ & 1400g         \\ \midrule
+Water               & 60\%    & $1400 \times 0.6$ & 840g        \\ \midrule
+Sourdough starter   & 10\%    & $1400 \times 0.1$ & 140g        \\ \midrule
+Salt                & 2\%     & $1400 \times 0.02$ & 28g        \\ \bottomrule
 \end{tabular}
-\end{document}