Please answer this thoroughly.

An alien has just landed from the planet, iksnimak. he would like to leam how to add two fractions when thedenominators are the same. write a paragraph that explains to our alien friend, in your own words, the detailsabout how to add the fractions, how to change the result to a mixed number, and how to reduce the fractionpart. use this problem as your example: the two fractions are 5/8 & 7/8

Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?