Brug Mix (reeks 2)

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\(63 + 14 = \ldots\)

\(\begin{align} & 63 + 14\\= & \color{green}{60} + \color{red}{3} + \color{green}{10} + \color{red}{4} \\= & \color{green}{70} + \color{red}{7} \\= & \color{red}{77} \end{align}\)