Mathematical Practices
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Write the algebraic expression modeled by the tiles and simplify it by combining like terms.
9
Let's examine each of the given algebra tiles and what they represent.
We have nine tiles that represent 1. By adding these, we can create an algebraic expression modeled by the tiles. 1+1+1+1+1+1+1+1+1 Finally, we will combine like terms to simplify the above expression. 9