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Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

Complete the solution of the equation. find the value of y when x equals to 1 9x-5y=29