Solve for r K=2r-S

$K = 2 r - S$

Step 1

Rewrite the equation as $2 r - S = K$ .

$2 r - S = K$

Step 2

Add $S$ to both sides of the equation.

$2 r = K + S$

Step 3

Divide each term in $2 r = K + S$ by $2$ and simplify.

Divide each term in $2 r = K + S$ by $2$ .

$\frac{2 r}{2} = \frac{K}{2} + \frac{S}{2}$

Simplify the left side.

Cancel the common factor of $2$ .

Cancel the common factor.

$\frac{2 r}{2} = \frac{K}{2} + \frac{S}{2}$

Divide $r$ by $1$ .

$r = \frac{K}{2} + \frac{S}{2}$