The inequality is .
Apply distributive property:
(Multiply:
)
(Product of two same signs is positive)
Apply subtraction property of inequality: Subtract 63 from each side.
\
(Additive inverse property:
)
(Additive identity property:
)
(Subtract:
)
(Divide each side by 7)
(Cancel common terms)
(Divide:
)
(Multiply each side by negative one and flip the symbol)
(Product of two same signs is positive)
Graph the solution set on a number line.
Note: A circle means that this point is not included in the solution set.
The inequality solution set is .