The inequality is .
Apply subtraction property of inequality: Subtract 4 from each side.
\ (Additive inverse property:
)
(Additive identity property:
)
(Substrat:
)
(Multiply each side by 2 )
(Cancel common terms)
(Multiply:
)
(Divide each side by
)
(Cancel common terms)
(Divide:
)
(Multiply each side by negative one and flip the symbol)
(Product of two same signs is positive)
Graph the solution set on a number line
Note: A circle means that this point is not included in the solution set.
Check:
\To check, substitute a number gratear than , in
.
(Substitute
)
(Multiply:
)
(Divide:
)
(Add:
)
The inequality is true.
The inequality solution set is .