Question

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Answer 1

The answers are as follows:

5.
`12+3 = 3+12`

7.
`(6+4)+8 = 6+(4+8)`

9.
`(10*5)*7 = 10*(5*7)`

Explanation:

5. 12 and 3

Commutative property of addition states that the order of two numbers in addition doesn't matter; the result will be the same. If a and b are two numbers then the property will be:

a+b = b+a

For the given question, the commutative property will be:

`12+3 = 3+12`

Associative property deals with three numbers or variables. It states that when 3 numbers are being added or multiplied their order doesn't affect the result.

It can be stated as:

(a+b)+c = a+(b+c)

7. 6,4 and 8

The associative property will be:

`(6+4)+8 = 6+(4+8)`

9. 10,5 and 7

`(10*5)*7 = 10*(5*7)`

Hence,

The answers are as follows:

5.
`12+3 = 3+12`

7.
`(6+4)+8 = 6+(4+8)`

9.
`(10*5)*7 = 10*(5*7)`