The inequality .
Apply substraction property of inequality: Subtract 8n from each side.
\ (Additive inverse property:
)
(Additive identity property:
)
(Subtract:
)
Apply substraction property of inequality: Subtract 9 from each side.
\ (Additive inverse property:
)
(Additive identity property:
)
(Subtract:
)
(Divide each side by 9)
(Cancel common terms)
(Divide:
)
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 -1.22 in .
(Substitute: n = -1.23)
Multiply the each terms:
(Subtract:
)
This value is true
The inequality solution is .