
The equation is
.
According to subtraction property of inequality: Subtract 8r from each side.
\
(Subtract:
)
(Apply commutative property of addition:
)
(Apply additive inverse property:
)
(Apply additive identity property:
)
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 greater than 6 in
.
(Substitute r = 7)
(Multiply:
)
(Add:
)
The inequality is true.
The inequality solution set is
.