Answer:
w = 26
Step-by-step explanation:
set up an equation; since this is a right angle, it equals 90 degrees
90 = w + 12 + 2w
90 - 12 = w + 2w
78 = 3w
78/3
2w +w + 12 =90
3w +12 = 90
-12 -12
3w = 78 then 3w/3 = 78/3
w=26
