What’s the answer to 4m-17/m square-16+3m-11/m square-16

What is fraction that is equivalent to 3/8

If the angle bisectors of a pair of opposite angles of a quadrilateral are the opposite sides of a parallelogram formed by the two angle bisectors and two sides of the quadrilateral, is the quadrilateral always a parallelogram? explain your answer.

What number gives you a irrational number when added to 2/5