Solving Equations w/ the variable on each side 1. 2h-8=h+17
2. 4n-12=12-4n
3. -6y - 3=3-6y
4. -9+8k=7+4k
5. 3(5j + 2)=2(3j-6)
please help me

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?