So the first thing to do in the equation is (5×4) which equals 20.
So then you add 2 and 20 because the next thing to do is addition. That equals 22. After that you subtract 7 and 22 which is 15. Then you finally add 2 and 15 which equals 17. :) Ur welcome
The answer your looking for is no, because in any certain type of triangle. Each triangle is 180 degrees like trying to find the missing angle of a triangle.