
The inequality is
.
Apply division property of inequality: Divide each side by 8.4.
\
(Cancel common terms)
(Divide:
)
(Multiply each side by negative one and flip the symbol)

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-0.25 in inequality
.

(Multiply:
)
The inequality is true.
The inequality solution is
.