Simplify 6 square root of x- square root of x-3 square root of y+ square root of y

$6 \sqrt{x} - \sqrt{x} - 3 \sqrt{y} + \sqrt{y}$

Subtract $\sqrt{x}$ from $6 \sqrt{x}$ .

$5 \sqrt{x} - 3 \sqrt{y} + \sqrt{y}$