How do you solve $15 n + 9 = 21$ $15n+9=21$ ?

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Answer 1 · 2016-08-17T22:57:18

Isolate $n$ $n$ .

To do this, let's subtract $9$ $9$ from each side:

$15 n = 12$ $15n=12$

Next, let's divide each side by $15$ $15$ :

$\frac{15 n}{15} = \frac{12}{15}$ $(15n)/15=12/15$

$n = \frac{4}{5}$ $n=4/5$

How do you solve 15n+9=2115n+9=21?