# How to work out as in picture!

Can you show me how to work out as in picture? Thank you!

• Welcome to TeX.SX! This is a do-it-for-me question. Please show us what you've got so far (MWE). – TeXnician Apr 20 '17 at 8:48

Use aligned from the amsmath package. You seem to struggle with the very basics of LaTeX. Therefore please also see these two questions:
\documentclass{article}
\begin{aligned} -\Delta u &= \mu p(x,u), && x \in \Omega \\ u &= 0, && x \in \partial\Omega, \end{aligned}