4x=3(3x-10)-5x+14
4x=9x-30-5x+14
4x=4x+16
0x=16
No Solution
Speed = distance/time
Speed = 90 meters/45 seconds
Simplify the above answer
Speed = 2 meters/second
You can double-check this: You walk 2 meters per second, so multiply 2 by 45 (that is how many seconds), and you get 90.