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\(9 + 17 = \ldots\)

\(\begin{align} & 9 + 17 \\= & 17 + 9 \\= & 17 + \color{green}{3} + \color{red}{6} \\= & \color{green}{20} + \color{red}{6} \\= & \color{red}{26} \end{align}\)