Can someone help me with this question? step by step pls

In order to find the area of the web browser, recall that the equation to find the area is length*width. Since we know that the area is 24 square inches, we can create an equation:

x(x - 2) = 24
x^2 - 2x - 24 = 0

Factor:
(x - 6)(x + 4) = 0

{6, -4}

Since the length can't be a negative number, we can rule out -4 and affirm that x = 6.

Since we know the browser makes up 3/13 of the screen, we can make an equation with a variable where 'a' represents area of the computer:

(3/13) * a = 6
3a/13 = 6
3a = 78
a = 26

Now that we know the area, we can solve for the dimensions:

l*w = 26
(x + 7) * w = 26
(6 + 7) * w = 26
(13) * w = 26
w = 2

Input the width into the original equation:
l * (2) = 26
l = 13

The dimensions of the computer are 13 x 2.
The length of the browser is 6 inches.

Let me know if you need me to explain anything I did here.
-T.B.