
The equation is
.
Write two cases:
\Case-1: 
Case-2: 

Solve the equation for Case-1.
\
Apply addition property of equality: Add 3 to each side.
\
(Apply Additive inverse property:
)
(Apply Additive identity property:
)
(Add:
)
Check:
\To check the solution, substitute
in original equation.
(Subtract:
)
(The absolute value of 17 is 17)
Compare the values the equation is true.
is a solution.
Solve the equation for Case-2.
\
Apply addition property of equality: Add 3 to each side.
\
(Apply Additive inverse property:
)
(Apply Additive identity property:
)
(Add:
)
Check:
\To check the solution, substitute
in original equation.

(Subtract:
)
(The absolute value of
is 17)
Compare the values the equation is true.
is a solution.
The solution set is
.