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.
\Check:
\To check the solution, substitute in original equation.
The absolute value of is 7.
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.
\Check:
\To check the solution, substitute in original equation.
\
(The absolute value of
is 7)
Compare the values the equation is true. is a solution.
The solution set is .