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Usually I set equations using the align environment together with \nonumber for those few lines that shall not have a number, or the align* environment if no equation shall be numbered. But what if there are only few equations in a an align block that shall be numbered? In that case, adding \nonumber to almost all lines is a bit annoying, so is there anything like \donumber in an align* environment?

marked as duplicate by Tobias Kienzler, Torbjørn T., jub0bs, egreg, Seamus Apr 30 '13 at 9:38

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