Which is the best reason why step 1 is a good first step in the solution shown?
equation: x/5 = 15
solution: step 1: 5*x/5 = 15*5 step 2: x = 75

Hope this helps! :) When you multiply by 5 on both sides, it cancels out the 5 on the left side!(of the equal sign). To undo division, you must use multiplication! On the left side, division is being used, so multiply it and it goes away(Or undos it)!