Vertical Subtraction: 2-digit and 1-digit numbers -regrouping of tens

$\begin{aligned} &24 \\ -& \\ &~~5 \\ &\underline{\phantom{776}} & \\ \end{aligned}$

19

$\begin{aligned} &43 \\ -& \\ &~~6 \\ &\underline{\phantom{776}} & \\ \end{aligned}$

37

$\begin{aligned} &35 \\ -& \\ &~~7 \\ &\underline{\phantom{776}} & \\ \end{aligned}$$$

28

$\begin{aligned} &55 \\ -& \\ &~~8 \\ &\underline{\phantom{776}} & \\ \end{aligned}$

47

$\begin{aligned} &67 \\ -& \\ &~~9 \\ &\underline{\phantom{776}} & \\ \end{aligned}$

58

$\begin{aligned} &72 \\ -& \\ &~~8 \\ &\underline{\phantom{776}} & \\ \end{aligned}$

64

$\begin{aligned} &72 \\ -& \\ &~~8 \\ &\underline{\phantom{776}} & \\ \end{aligned}$

64

$\begin{aligned} &88 \\ -& \\ &~~9 \\ &\underline{\phantom{776}} & \\ \end{aligned}$

79

$\begin{aligned} &76 \\ -& \\ &~~8 \\ &\underline{\phantom{776}} & \\ \end{aligned}$

68

$\begin{aligned} &88 \\ -& \\ &~~9 \\ &\underline{\phantom{776}} & \\ \end{aligned}$

79

$\begin{aligned} &91 \\ -& \\ &~~7 \\ &\underline{\phantom{776}} & \\ \end{aligned}$

84

$\begin{aligned} &91 \\ -& \\ &~~7 \\ &\underline{\phantom{776}} & \\ \end{aligned}$

84

$\begin{aligned} &94 \\ -& \\ &~~6 \\ &\underline{\phantom{776}} & \\ \end{aligned}$

88