Question

solve for n.
( d = 3m + 7n )
( n = )

Explanation:

Step1: Isolate the term with n

Subtract $3m$ from both sides.
$d - 3m = 7n$

Step2: Solve for n

Divide both sides by 7.
$n = \frac{d - 3m}{7}$

Answer:

$\frac{d - 3m}{7}$