Question 948711
A most basic property of Equality.  


{{{ (5/2)y=x^2 }}} 
The left member is the same as the right member.  They appear different but the equality symbols says, "these are the same quantity."





to 


{{{ x^2=(5/2)y }}}


The left member and the right member were the same number earlier; now they have switched places.  This equation still says, "these are the same quantity."


Look in your book in one of the early chapters for "Symmetric Property..."