7/9x9/2=63/18= wat does that equal

Seth practice piano for 1 1/3 hours on saturday and 5/6 hour on sunday for much longer did he practice on saturday than on sunday?

Giving 100 points asap bev has to cut her grandma's grass this weekend and wants to know exactly how much area she will be cutting. calculate the area of the polygon. be sure to show all your work and explain your answer.

What is the solution to the system of equations? (–2, –8) (–1, –5) (0, –2) (2, 4)