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Hi i am having a problem making a custom tag for this equation

\begin{equation*}\label{eq:3}
        C_1 = \theta \left(Y_1^L -T_1+\frac{1}{1+r}(Y_2^L+T_2)+V_1\right) \tag(3)
    \end{equation*}

I want to refer to an equation from a book (as part of my class) which i called equation 3. But i simply can't change it without getting a lot of syntax errors.

I have tryed different things form the forum, but so far without luck.

Hope you can help.

marked as duplicate by Zarko, Stefan Pinnow, barbara beeton, Henri Menke, Mensch Oct 8 '16 at 18:09

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Just eliminate those stars coming after equations *. This is true fact in most cases of latex. With putting some star, you may present your equations without having numbers or tags.

  • Can you maybe expand you nswer a bit? Bernard already adviced that in the comments and we like answers to be a tiny bit more verbose. – Johannes_B Oct 8 '16 at 15:45

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