$7 + 3 - 3 = 7$7, plus, 3, minus, 3, equals, 7

$5 - 2 + 2 = 5$5, minus, 2, plus, 2, equals, 5

$\begin{aligned} k + 22 &= 29 \\\\ k + 22 \blueD{- 22} &= 29 \blueD{- 22}~~~~~~~~~~\small\gray{\text{გამოვაკლოთ 22 ორივე მხარეს.}} \\\\ k &= \greenD{7}~~~~~~~~~~\small\gray{\text{გავამარტივოთ.}} \end{aligned}$

$\begin{aligned} p - 18 &= 3 \\\\ p - 18 \blueD{+ 18} &= 3 \blueD{+ 18}~~~~~~~~~~\small\gray{\text{დავუმატოთ 18 ორივე მხარეს.}} \\\\ p &= \greenD{21}~~~~~~~~~~\small\gray{\text{გავამარტივოთ.}} \end{aligned}$