התחבר/י באמצעות
- או -
\[\begin{aligned} ?+0=23 \end{aligned}\]
\[\begin{aligned} 79-?=0 \end{aligned}\]
\[\begin{aligned} 81-?=0 \end{aligned}\]
\[\begin{aligned} ?+0=11 \end{aligned}\]
\[\begin{aligned} 23-?=23 \end{aligned}\]