171 + 727 = 175 + 725 how do you come up with this in common core math

The number of branches on a tree demonstrates the fibonacci sequence. how many branches would there be on the next two levels of this tree? 13 | | | m branches

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles

Write an inequality for this description. - one fourth of the opposite of the difference of five and a number is less than twenty.