Question

How to know if an equation is false, true, or an open scentence

Answer 1

To know when a equation is false, it is simply incorrect. When a equation is true, it will be correct. An open sentence is a statement which contains a variable, and becomes either true or false, depending on the value that replaces the variable. Hope this helps!

Answer 2

Well it is true if the problem is the right with the right answer.  If not you have a false eqaution.