Answer:
Step-by-step explanation:
hello :
it the width and length the Integer number you have two rectangle :
22 = 1×22 or 22 = 2×11
1) width = 1 length =22
2) width =2 length =11
7x = -x + 24
+x. +x
8x = 24
X = 3
For this case we must find the solution of the following equation:

Applying distributive property on the right side of the equation we have:

Subtracting 7x from both sides of the equation:

Subtracting 20 from both sides of the equation:

Different signs are subtracted and the major sign is placed.

Dividing between -2 on both sides of the equation:

Thus, the solution of the equation is
Answer:

Answer:
:)
Step-by-step explanation:
For simplicity I will substitue
for β.

In the first step I used the identity
And I factored out 
Then it's just simple algebra to cancel till the 3rd step where we used another identity derived from the Pythagorean Theorem.

That's it!