The equation is
.
Divide each side by 12.
\
Cancel common terms.
\
.
For any real numbers a and b, where
, if
then
.
Case 1:
.
Subtract 3 from side.
\



Multiply each side by 2.
\
Cancel common terms.
\
.
Case 1:
.
Subtract 3 from side.
\



Multiply each side by 2.
\
.
To check the solution 1 substitute the value of
in the original equation.




.
Because the above statement is true, so the value of
is a solution of the original equation.
To check the solution 1 substitute the value of
in the original equation.





.
Because the above statement is true, so the value of
is a solution of the original equation.
The solutions are
.