Solve for y y = square root of 49-10

$y = \sqrt{49} - 10$

Step 1

Simplify each term.

Rewrite $49$ as $7^{2}$ .

$y = \sqrt{7^{2}} - 10$

Pull terms out from under the radical, assuming positive real numbers.

$y = 7 - 10$

Step 2

Subtract $10$ from $7$ .

$y = - 3$