Question

(z-9)+2=9solve the equation

Answer 1

the equation is:

$(z-9)+2=9$

Now we can substrac -2 in bout sides of the equation:

$\begin{gathered} z-9+2-2=9-2 \\ z-9=7 \end{gathered}$

now we can add 9 so:

$\begin{gathered} z-9+9=7+9 \\ z=16 \end{gathered}$