Solve for A R=x(A+B)

$R = x (A + B)$

Rewrite the equation as $x (A + B) = R$ .

$x (A + B) = R$

Divide each term in $x (A + B) = R$ by $x$ and simplify.

Divide each term in $x (A + B) = R$ by $x$ .

$\frac{x (A + B)}{x} = \frac{R}{x}$

Simplify the left side.

Cancel the common factor of $x$ .

Cancel the common factor.

$\frac{x (A + B)}{x} = \frac{R}{x}$

Divide $A + B$ by $1$ .

$A + B = \frac{R}{x}$

Subtract $B$ from both sides of the equation.

$A = \frac{R}{x} - B$