How to align multiple rows after right brace

Question

I want my text, which I wrote after right brace, to be aligned right next to the brace. But they keep going far right and align with the longest line's end, vertically.

  \begin{align*}
    \left.
        \begin{aligned}
            x=ab\\
            y=ab\\
            z=ab\\
        \end{aligned}
    \right\}
    \begin{aligned}
        something in 1st row\\
        something in 2nd row which is super long and causes some\\
        something in 3rd row\\
        something in 4th row\\
        something in 5th row
    \end{aligned} 
    \end{align*}

Answer 1

Welcome to TeX.SE!

You need to insert ampersands before text in the second aligned (and also before equal signs in the first one, if you like to have expression there aligned at them) :

\documentclass{article}
\usepackage{amsmath}

\begin{document}

  \begin{align*}
    \left.
        \begin{aligned}
            x & =ab\\
            y & =ab\\
            z & =ab\\
        \end{aligned}
    \right\}
    \begin{aligned}
        &   something in 1st row\\
        &   something in 2nd row which is super long and causes some\\
        &   something in 3rd row\\
        &   something in 4th row\\
        &   something in 5th row
    \end{aligned}
    \end{align*}

\end{document}