Identity: An equation satisfied by every number that is a meaningful replacement for the variable. Example: 3(X+1)=3X+3
Conditional Equation: An equation that is satisfied by some number but not others, such as 2X=4
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It is any equation which is not an identity.
An equation has an equal = sign whereas an expression does not.
hyperbola
Both are same..just the names are different.
Equation: x+3=3+x (notice the equal sign: equal; equation)Expression: x+3 (notice no equal sign)