What is 2/6 as a equivalent fraction

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?

Can someone me and explain..will award brainlest!

Perform the indicated operation and write the answer in the form a + bi. (-5 + 2) + (3 - 6i)