Question 948711

How is it you can reorder this from: {{{ (5/2)y=x^2 }}} to {{{ x^2=(5/2)y }}} I thought if you take something from one side you have to subtract. The way I would see it would be  {{{ -x^2=-(5/2)y }}} I think I misunderstand something.
<pre>All that was done was, the expressions were switched, just the same as switching: 
4 + 1 = 3 + 2    to     3 + 2 = 4 + 1.
If it was an inequality though, the inequality sign would not remain the same.
Additionally, your equation is correct, but you fail to realize that a negative, divided by a negative
results in a positive, so your expression, {{{- x^2 = - (5/2)y}}} is actually identical to: {{{x^2 = (5/2)y}}}