Brug Mix (reeks 1)

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\(46 + 40 = \ldots\)

\(\begin{align} & 46 + 40\\= &40+46\\= &40 + \color{green}{40} + \color{red}{6} \\= & \color{green}{80} + \color{red}{6} \\= & \color{red}{86} \end{align}\)