### Условие задания:

1 Б.
Лёша, Маша и Оля решая один пример, получили разные результаты.

Рассмотри решения ребят.

 Лёша: $\begin{array}{l}\begin{array}{ll}\begin{array}{l}{}_{-}717\phantom{\rule{0.735em}{0ex}}\\ \phantom{\rule{0.588em}{0ex}}\underset{¯}{66}\end{array}& \left|\begin{array}{l}\underset{¯}{11}\\ 605\end{array}\right\end{array}\\ \phantom{\rule{0.735em}{0ex}}{}_{-}57\\ \phantom{\rule{1.470em}{0ex}}\underset{¯}{55}\\ \phantom{\rule{2.058em}{0ex}}2\end{array}$ Маша : $\begin{array}{l}\begin{array}{ll}\begin{array}{l}{}_{-}717\phantom{\rule{0.735em}{0ex}}\\ \phantom{\rule{0.588em}{0ex}}\underset{¯}{66}\end{array}& \left|\begin{array}{l}\underset{¯}{11}\\ 64\end{array}\right\end{array}\\ \phantom{\rule{0.735em}{0ex}}{}_{-}57\\ \phantom{\rule{1.470em}{0ex}}\underset{¯}{44}\\ \phantom{\rule{1.470em}{0ex}}13\end{array}$ Оля : $\begin{array}{l}\begin{array}{ll}\begin{array}{l}{}_{-}717\phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\\ \phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\underset{¯}{66}\end{array}& \left|\begin{array}{l}\underset{¯}{11}\\ 65\end{array}\right\end{array}\\ \phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}{}_{-}57\\ \phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\underset{¯}{55}\\ \phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}\phantom{\rule{0.147em}{0ex}}2\end{array}$

Кто прав?

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