New posts in Subequations

New numbering system

How can I group all these equations in just one group and write them without the error Missing $ inserted. ...gy}

Hyperref with align inside subequations

Equation numbering inside aligned placed next to an alignedat

Typesetting an optimisation problem

Alternative subequations numbering and references

Equations aligned center

Equation number for each row of a matrix equation

subequations and array in braces

Cleveref: Parentheses around references to subequations using \labelcref