The Horizontal Format Is Used Extensively in Algebra, but Occasionally $$\begin{array} { r } - \quad 13 \\- \quad 19 \\\hline\end{array}$$

question 93

Short Answer

The horizontal format is used extensively in algebra, but occasionally the vertical format shows up. You should therefore have some exposure to the vertical format. Find the sum. $$\begin{array} { r } - \quad 13 \\- \quad 19 \\\hline\end{array}$$

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