Solve for x: 9x-1=10x+9

How do you get x off one side and onto the other, please explain

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)?

Find the difference (8ab+a+2) - (3ab+6)

Solve the equation -9p - 17 =10 a -3 b. 16 c. 18 d -16