N=25 You just divide 300 and 12 to get 25!
Is there a fraction or a number line to explain you question?☺
Solution:
we are given that
In the image, shape ABCD is similar to shape WXYZ.
we have been asked to find the measure of side ZW.
As we know that when two shapes are similar then the ratios of their corresponding sides are equal.
So we can write

Hence ZW=4.5 Inches.
Simplify 2x+6=4x+-2 reorder the terms 6+2x=4x+-2