
The inequality is
.
According to addition property of inequality: Add 5 to each side.
\
Apply commutatite property of inequality :
.

(Apply additive inverse property:
)
(Apply additive identity property:
)
(Add:
)
Graph the Solution set on a number line. .gif\")
Note: A circle means that this point is not included in the solution set.
check:
\To check, substitute a number greater than 4 in
.
(Substitute
)
(Apply additive inverse property:
)
The inequality is true.
The inequlity solution is
.