Remove spurious/strange paragraph breaks

chapters/equations.tex

@@ -244,10 +244,7 @@ \subsubsection{Defining When-Equations by If-Expressions in Equality Equations}\
     v2 = expr2;
   end when;
 \end{lstlisting}
-
-is conceptually equivalent to the following equations containing special
-if-expressions
-
+is conceptually equivalent to the following equations containing special if-expressions
 \begin{lstlisting}[language=modelica]
   // Not correct Modelica
   Boolean b(start=x.start>2);
@@ -923,8 +920,7 @@ \section{Initialization, initial equation, and initial algorithm}\doublelabel{in
 y = a*pre(y) + b*u;
 y = pre(y);
 \end{lstlisting}
-
-With the solution:
+with the solution:
 \begin{lstlisting}[language=modelica]
 y := (b*u)/(1-a)
 pre(y) := y;