Properties to fine the sum or product 34+0+18+26

The commutative property of addition can be used to rarrange this to

... 0 + 18 + 34 + 26

Then the identity property of addition can be used to remove the 0 term

... 18 + 34 + 26

We can use the associative property of addition to form the sum of 34 and 26, convenient because 4 and 6 "make a 10". That sum is 60, so now the sum is

... 18 + 60

which is easily seen to be

... 78

Hey there!

Commutative property:

Identity property:

Associative property:

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x = 3 ± √(5+y)

might be the correct answer will be question number 2