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To solve an absolute value equation, first write two equations.
\Equation 1: 
Equation 2: 
Solve equation 1.
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According to Subtraction property of equality: if
, then 
(Subtract 9 from each side)
(Using commutative property: a + b = b + a)
(Subtract:
)
(Add 4 to each side)
(Add:
)
(Divide each side by 2)
(Cancel common terms)
(Divide:
) \ \
Solve equation 2.
\
(Subtract 5 from each side)
(Using commutative property: a + b = b + a)
(Subtract:
)
(Divide each side by 2)
(Cancel common terms)
(Divide:
) \ \
The solution set is 
\
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