
The inequality is
.
Apply subtraction property of inequality: Subtract 4 from each side.
\
(Additive inverse property:
)
(Additive identity property:
)
(Subtract :
)
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 less than -1, in
.
(Substitute
)
(Add:
)
The inequality solution set is
.