I have equations in two different align
environments. How do I align them equally in such a way that the =
sign is in the exact position following the sequence.
The MWE:
\documentclass[12pt]{article}
\usepackage{amsmath}
\begin{document}
\begin{align}
B &= \mu.H \\
&= \mu_0.H + \mu_0.M
\end{align}
As $\mu = \mu_0.\mu_r$,
\begin{align}
B &= \mu_0.\mu_r.H \\
&= \mu_0(H + M)
\end{align}
\end{document}