How to solve 3 3/5 - 2/3?

The lengths of two sides of a right triangle are given. find the length of the third side. round to the nearest tenth if necessary. a) y = 12/5x + 39/5 b) y = 5/12x + 5/39 c) y = 12/5x - 39/5 d) y = 5/12x - 5/39

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.

Solve the equation for x by graphing.2^x – 4 = -4^x + 4