The equation is,
(Distribute
)
(Add:
)
Division property of equality:
\Any numbers a, b and c, with
, if
then 
(Divide both sides by 5)
(Cancel common terms)
Check:
\To check the solution, substitute
in original equation.
(Substitute
)

(Multiply:
)
(Add:
)

Compare the values, the equation is true. The solution is
.
The solution is
.