Question

solve for y.
$r=y+x$
$y = \square$

Explanation:

Step1: Isolate y by subtracting x

Subtract $x$ from both sides of the equation.
$r - x = y + x - x$

Step2: Simplify the right-hand side

The $x$ terms cancel out on the right.
$r - x = y$

Answer:

$r - x$