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Answer :

Lyanya04go
11) 5a-3a= 2
15) 17+(-17)= 0
13) (-9)+3= -6
14) 12(1)= 12
12) (8x)y= 8xy
Syedamaimuna9a6go

Answer:

11. Distributive property

    = 5a - 3a

    =  a (5-3)

12. Associative property

    = (8x) y

    = 8 (xy)

13. Commutative property

     = (-9) + 3

     = 3 + (-9)

14.  Identity property

     = (12) (1)

     = (1) (12)

15. Inverse property

     = 17 + -17

     = 17 + -17 = 0

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