how do you write this in latex using the \begin{align*} command? (the red lines indicate alignment)

  https://www.reddit.com/r/LaTeX/comments/1fs6a74/how_do_you_write_this_in_latex_using_the/
 

https://www.reddit.com/r/LaTeX/comments/1fs6a74/how_do_you_write_this_in_latex_using_the/