Fill in the blank and determine what properties were used to solve the questions. 8.(5 + 12) = (__ + 5)
9.(___ + 3) + 11 = 6 + (3 + 11)
10.3(12 + 4) = (3)(___) + (3)(4)
9.(___ + 3) + 11 = 6 + (3 + 11)
10.3(12 + 4) = (3)(___) + (3)(4)
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