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Mr.walker asked his students to use the associative property to find an exoression that is equivalent to (13+15+20)+(20+47+18).

Respuesta :

the answer is (20+15+13)+(18+47+20)
[tex]13+15+20+20+47+18 =28+20+20+47+18 =48+20+47+18 =48+67+18 =48+85 =133[/tex]

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