Solve for r p=r+s+t

$p = r + s + t$

Step 1

Rewrite the equation as $r + s + t = p$ .

$r + s + t = p$

Step 2

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

Subtract $s$ from both sides of the equation.

$r + t = p - s$

Subtract $t$ from both sides of the equation.

$r = p - s - t$