Multiple subequations and equations in a single align environment
123486
Block of equations with only some being subequations
112018
Multiple alignments
63946
Show equation number only once in align environment
23676
How to left align a set of equations
105628
Aligned equations in LaTeX
2534
How to get only one vertically centered equation number in align environment with two equations
32051
multi line equation with full left brace, small right brace and text at right bottom of right brace
151601
Aligned multline
146064
How to number equations with a list environment
137022
Align Equations Over Multiple Tabular Rows
63238
Multlined in align enviromnent: alignment of = and equation numbering
27341
Making  a new environment combining equation and split
27103
Best way to create an system of equations environment?
107214
How to write aligned equations and export them HTML/TeX
76817
Labelled in-line equation
48158
Selective numbering of equations with align
15360
Why align and equation environment do not tolerate empty lines?