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To solve an absolute value equation, first write two equations.
\Equation 1: 
Equation 2: 
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Solve equation 1.
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According to Subtraction property of equality: if
, then 
(Subtract 4 from each side)
(Subtract:
)
(Multiply each side by 2)
(Cancel common terms)
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(Multiply:
)
Solve equation 2.
\
\ \
(Subtract 4 from each side)
(Subtract:
)
(Multiply each side by 2)
(Cancel common terms)
\\ \
\
(Multiply:
)
The solution set is 

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