You can put this solution on YOUR website! is when two things are equal. Equations are equalities. Solving them finds the value of the unknown variable; it finds what that variable is equal to.
example:
are written like equations, but when you solve them you end up with a of solutions. These will tell you what it is possible for the variable to be, not what it actually is, because you cannot tell from the information given.
example:
must be than .....(less than or equal to)
is than to is to is to