How do you solve 39 = n/5 - 21?

May 27, 2016

$n = 300$

Explanation:

the first thing that you want to do is eliminate the fractions. to do so, every variable has to be multiplied by the denominator.

$\left(39 \times 5\right) = \left(\frac{n}{5} \times 5\right) - \left(21 \times 5\right)$

$195 = n - 105$

isolate the $n$ by adding $105$ to both sides

$300 = n$

then reverse for flow

$n = 300$