Possibility to align correctly and give numbering to a few formulas · Issue #2189 · KaTeX/KaTeX · GitHub
How to align a set of multiline equations - TeX - LaTeX Stack Exchange
numbering - How to have a single vertically centred equation number for multiline equation in LyX - TeX - LaTeX Stack Exchange
9.3 Multiple Lines of Displayed Maths
How to right align an equation label (number) in Quora LaTeX - Quora
How to Make a Multiline Equation in LaTeX
Main tutorials
How do you write big brackets in LaTeX?
label multiple lines of equations - TeX - LaTeX Stack Exchange
vertical alignment - How to get only one vertically centered equation number in align environment with two equations - TeX - LaTeX Stack Exchange
How to Make a Multiline Equation in LaTeX
9.3 Multiple Lines of Displayed Maths
LaTeX/Advanced Mathematics - Wikibooks, open books for an open world
LaTeX/Advanced Mathematics - Wikibooks, open books for an open world
How to align a set of multiline equations - TeX - LaTeX Stack Exchange
latex - How do you align a system of equations? - Stack Overflow
Multiline Formulae in LaTeX
latex - How to label each equation in align environment? - Stack Overflow
Working with LaTeX: LaTeX Math
How to Make a Multiline Equation in LaTeX
