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I'm writing an presentation of the project where I took a "standard" equation and modified it slightly. I would like to therefore show this by replacing the standard equation with its modified version.

I've seen a few solutions here, but they all deal with RHS replacements and don't work with the LHS.

I would like (this is merely as an example)

A &= B

to be replaced by

A + C &= B^D

while maintaining the alignment around the equations. I've tried using

\alt<2->{A + C}{A} &= \alt<2->{B^D}{B}

but while \alt solves RHS replacement (especially if used with \phantom to deal with possible vertical erros), with a variable LHS the result still wobbles. How can this be solved?

Wasabi
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  • The suggested duplicate is entirely valid. For the record, I adopted Henry DeYoung's solution, since it allows the LHS to be right-aligned. The others leave the above LHS in the first slide as A = B. – Wasabi Dec 16 '14 at 00:34

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