
The equation is
.
Apply subtraction property of inequality: subtract 7n from each side.
\
(Subtract:
)
(Commutative property of addition: a + b = b + a)
(Additive inverse property:
)
(Subtractive identity property:
)
Graph the Solution set on a number line
Note: A dot means that this point is included in the solution set.
Solution set is
.