Question

In the following problem, what property allows you to add the 17 and the 3 together before adding the 15?

17 + 15 + 3

Answer 1

associative i believe; which says that it doesnt matter how you add up a group, it still comes out the same

Answer 2

Theorem : All numbers are equal to zero.

Proof: Suppose that a=b. Then
a = b
a^2 = ab
a^2 - b^2 = ab - b^2
(a + b)(a - b) = b(a - b)
a + b = b
a = 0

Furthermore if a + b = b, and a = b, then b + b = b, and 2b = b, which mean that 2 = 1.

Answer 3

In the following problem, what property allows you to multiply 5 by 2 before multiplying by 13?

5 • 13 • 2

Answer 4

(a+b)+c=a+(b+c) this is associative

a+b+c=a+c+b this is commutative

Answer 5

commutativity is the next answer

Answer 6

its either Associative or commutative

Answer 7

5 • 13 • 2 is commutative property.

Answer 8

What property allows you to move the parentheses in the following problem?

(8 + 7) + 13 = 8 + (7 + 13)

Answer 9

look i what i typed above
what looks like this?

Answer 10

do you see the two rules i typed (and of course there are many more)?