10. 4r + 15 - 2r + 10= I
11. 8v - 2y + 4 + 9=
12. 12s + 9 - 4+9=
13. 4- 7p + 4p + 6-

Pls help someone
You have to combine the like terms I have no idea

The actual width ( w) of a regulation soccer field is 90 meters (m), and the actual length is 120 meters (m). a coach has drawn a scale model of the field on a blackboard. if the longest side of his drawing is 18 cm, how long is the other side of the drawing( w)?

Select the lengths in centimeters that would form a right triangle

Jermaine has t subway tokens. karen has 4 more subway tokens than jermaine. raul has 5 fewer subway tokens than jermaine. which expression represents the ratio of karen's tokens to raul's tokens