The pair of figures is similar. Find the missing side.
X = 5
x = 4
x = 12
x = 20

x = 5

Step-by-step explanation:

The scale factor of this shape is of 4

From 12 to 3, you divide by 4

So now, you need to divide 20 by 4 to get what x is, and 20 ÷ 4 is 5

Hope this helped!

Have a day!

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.