(542 + 98) − (900 − 846) = 586
Вычисления:
1) 542 + 98 = 640
$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}542\\ 98\end{array}}\\ \begin{array}{r}640\end{array}\end{array}$
2) 900 − 846 = 54
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}900\\ 846\end{array}}\\ \begin{array}{r}54\end{array}\end{array}$
3) 640 − 54 = 586
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}640\\ 54\end{array}}\\ \begin{array}{r}586\end{array}\end{array}$