3 questions. Please help. 1- What is 4/5-1/5=? In simplest form . Explain.

2-11/20-7/20=? In simplest form. Explain.

3-9/16-7/16=? In simplest form .Explain.

I’m stuck on this equation, anyone got the answer?

Ten members of balin's soccer team ran warm ups for practice. each member ran the same distance. their combined distance was 5/6 of a mile. to find the distance that each member ran, balin wrote the expression below.

In triangle abc, angle c is a right angle. find the value of the trig function indicated. find tan a if c = 17 and a = 8