Name the property that each equation illustrates.

Name the property that each equation illustrates
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1. 3 (a + 2b) = 3a + 6b
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2. 7(3 + 4y) = 21 + 28y
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3. 4a + (5b + 6c) = (4a + 5b) + 6c
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4. wr = rw

1.Distributive law
2.Distributive law
3. Associative law for addition.
4. commutative law for multiplication.
..

the 3rd line would be associative property of addition

Distributive
Distributive
associative or commutative
? :/ sorry. I was gonna say identity but that would be wr=wr