LaTeX Forum

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\begin{document}

%1. Formel
\begin{align*}
0 &= \frac{T}{C} - \frac{T_C}{C} \\
\frac{T_C}{C} &= \frac{T}{C} \\
T_C &= \frac{\num{28,60317}}{\SI{0,12359}{K^{-1}}} \\
T_C &= \SI{233,44}{K} 
\end{align*}

%2. Formel
\begin{align*}
E_{ges_1} &= E_{ges_2} &\\
\frac{1}{9} \, \mu_0 \, M_S^2 \, \pi \, r_c^3 + 4 \, \sqrt{A \, K} \, \pi \, r_c^2 &= \frac{2}{9} \, \mu_0 \, M_S^2 \, \pi \, r_c^3 &\\
4 \, \sqrt{A \, K} \, \pi \, r_c^2 &= \frac{1}{9} \, \mu_0 \, M_S^2 \, \pi \, r_c^3 & \\
r_c &=  \frac{36 \, \sqrt{A \, K}}{\mu_0 \, M_S^2} &
\end{align*}

\end{document}