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Hey I've been using LaTeX for about an hour, no experience in CS. Can anyone help me with this?

\arrayrulecolor{}
\[ \begin{array}{*4r}
   &   &   &8\\
   &   &   &8\\
   &   &   &8\\
   &   &8  &8\\
  +&8  &8  &8\\ 
  \hline
   &1  &0  &0  &0\\
   \end{array} \]

It comes out looking like this

Thank you anyone who can help!

1 Answer 1

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The end should be

\hline
   1  &0  &0  &0\\
   \end{array} \]

which gives 4 columns, not five, as you had.

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