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helpfulAnswer:
1. (3 + x) + 6y (last option)Step-by-step explanation:
Mathematically, the associative property of addition can be written as follows:
(a + b) + c = a + (b + c)
and the associative property of multiplication can be written as follows:
(a * b) * c = a * (b * c)
both properties holds for any real numbers a, b, and c.
Therefore, for the addition
3 + (x + 6y ) = (3 + x ) + 6y (last option)
and for the multiplication
6(4a ⋅ 2) = (6 ⋅ 4a) ⋅ 2 (last option)
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