Solve for a s=n(a+1)

$s = n (a + 1)$

Step 1

Rewrite the equation as $n (a + 1) = s$ .

$n (a + 1) = s$

Step 2

Divide each term in $n (a + 1) = s$ by $n$ and simplify.

Divide each term in $n (a + 1) = s$ by $n$ .

$\frac{n (a + 1)}{n} = \frac{s}{n}$

Simplify the left side.

Cancel the common factor of $n$ .

Cancel the common factor.

$\frac{n (a + 1)}{n} = \frac{s}{n}$

Divide $a + 1$ by $1$ .

$a + 1 = \frac{s}{n}$

Step 3

Subtract $1$ from both sides of the equation.

$a = \frac{s}{n} - 1$