3(g-3)=6
How do I do these problems?
(BTW: I understood the things of the 4 variable things).
$\displaystyle 3(g-3)=6 \mbox{ / in both sides } \frac{1}{3} $
$\displaystyle \Leftrightarrow{\frac{3(g-3)}{3}=\frac{6}{3}}$
$\displaystyle \Leftrightarrow{(g-3)=2}\mbox{ / in both sides plus +3}$
$\displaystyle \Leftrightarrow{g-3+3=2+3}$
$\displaystyle \Leftrightarrow{g=5} \mbox{ end}$