A.6.3.RT.OE:2 - Problem

Content can be present while its useful relations remain difficult to recover. A reader may have to remember a shared quantity across distant expressions, infer a grouping that the inscription does not specify, or coordinate a sequence without a common reference.

Making the expression visually tidy can preserve that difficulty. Changing its arrangement can also suggest a relation that the source never supplied: equality through aligned marks, precedence through left-to-right position, or simultaneous action through matching rows.

The task is to prepare the expression so that the needed operation can be carried out under its actual conventions, while retaining the content and qualifications that the operation uses.