The measure of angle CAE is 28°
When there is a transversal across parallel line, the angles can be alternate , vertical or corresponding and in each case they are equal.
Line DE is parallel to line BC
therefore angle BAD = 47° ( alternate angles)
angle BAD , BAC and CAE are on a straight line , this means that the sum of these angles will be 180°
let CAE be x
Therefore;
47 + 105 + x = 180
x = 180 - ( 105 +47)
x = 180 - 152
x = 28°
Therefore the measure of angle CAE is s 28°