Solve for m n+7m=d

$n + 7 m = d$

Subtract $n$ from both sides of the equation.

$7 m = d - n$

Divide each term in $7 m = d - n$ by $7$ and simplify.

Divide each term in $7 m = d - n$ by $7$ .

$\frac{7 m}{7} = \frac{d}{7} + \frac{- n}{7}$

Simplify the left side.

Cancel the common factor of $7$ .

Cancel the common factor.

$\frac{7 m}{7} = \frac{d}{7} + \frac{- n}{7}$

Divide $m$ by $1$ .

$m = \frac{d}{7} + \frac{- n}{7}$

Simplify the right side.

Move the negative in front of the fraction.

$m = \frac{d}{7} - \frac{n}{7}$