Solve for b P=a+b+c for b

$P = a + b + c$ for $b$

Step 1

Rewrite the equation as $a + b + c = P$ .

$a + b + c = P$

Step 2

Move all terms not containing $b$ to the right side of the equation.

Subtract $a$ from both sides of the equation.

$b + c = P - a$

Subtract $c$ from both sides of the equation.

$b = P - a - c$