An equivalent expression is an algebraic expression that looks different but has the same value or produces the same result as another expression for all values of the variables involved. Equivalent expressions can be found by using the distributive property, combining like terms, factoring, or substitution. For example, 3(2y + 4) is equivalent to 6y + 12 because when you expand and simplify 3(2y + 4), it becomes 6y + 12, which has the same value for any y. Two expressions are equivalent if they always give the same output for every input value of their variables.

If you have a specific expression in mind, please provide it, and I can help find or verify its equivalent expression.