Solve the following equation for x: 2x + 5y = 8

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

Okay so i didn't get this problem petro bought 8 tickets to a basketball game he paid a total of $200 write an equation to determine whether each ticket cost $26 or $28 so i didn't get this question so yeahyou have a good day.

A10 inch cookie cake is divided into 8 slices. what is the area of 3 slices