2 1/2 divided X = 5
2 1/2 times X = 5
2 1/2 divided by x.
first multiply both sides by X, and you'll get 2.5= 5x , than divide both sides by 5 to get x alone on one side, and you'll get x=.5.
2.5 times x = 5
again, divide both sides by 2.5 to get x alone on one side. x = 2