Originally Posted by

**jlpiii** Here is what is confusing to me about "Simple Equations": the given equation is 3x = 15. He goes on to say that you just divide both sides by 3 and that gives you the answer of x = 5. It looks to me like the answer would be 1x = 5 because 3 divided by 3 = 1 (I think). I don't see how 1x can equal 5. Then my next question is do you always divide both sides of an equation by the number on the left side (like in the above equation), or am I missing something here? How would you know which number to divide both sides by?