What property is shown? –12 + (27 + 12) = –12 + (12 + 27) A. associative property B. commutative property C. distributive property D. opposite of a sum property

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What property is shown? –12 + (27 + 12) = –12 + (12 + 27) A. associative property B. commutative property C. distributive property D. opposite of a sum property

Mathematics
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Will medal!!!!!!!!!!
I think B
The answer would be commutative because it changes order.

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Other answers:

ok thx!
so is the answer for this on B Which is an example of the commutative property? A. –13 + 27 = 27 + (–13) B. –21 + (11 + 13) = (–21 + 11) + 13 C. 4(–3 + 5) = 4(–3) + 4 ∙ 5 D. –(–8 + 3) = 8 + (–3)
commutative: change of order associative: change of grouping
ok thx!
distributive: a(b + c) = ab + ac
Associative property keeps the order but changes the parentheses.
ok...................
so am i correct???
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No its not B. B is associative property
Oh
Commutative property is a change of order. Here is the general way of stating the commutative property of addition: a + b = b + a
wit what problem is this for?
*wait
I am talking about the second problem
ok
For the second problem, in B., the 11 and 13 were grouped together on the left side. On the right side, the -21 and 11 are grouped together. This is a change of grouping, so B is associative, not commutative.
so for communicative u have 2 change the whole thing?
You need to find a statement that is an example of a + b = b + a, which is commutative.
OH
It is not "communicative." Communicative means you like to communicate. It is "commutative." Commutative means you change, as in change the order.
ok im confused for communicative u change the order the opposite
wit my problem is commutative property not communicative
*wait
Commutative: See if one of the choices shows this: (first number) + (second number) = (second number) + (first number)
oh i see thx
so A then right?
Commutative property of addition. (first number) + (second number) = (second number) + (first number) a + b = b + a Example: 3 + 5 = 5 + 3
Correct. A is the answer.
k
thx sooooo much
You're welcome.
What value of q makes the statement true? –(q + 14) = –3 + (–14) A. –17 B. –3 C. 3 D. 17
yw
i now it has 2 be 3 but im not sure if it is -3 or 3
I think just 3
Let's use the distributive property first on the left side. –(q + 14) = –3 + (–14) -q + (-14) = -3 + (-14)
Now you see that -q must equal -3 That means q = 3, not -3
You are correct. q = 3
Yes you are correct but let @mathstudent55 explain to you why its that
thx guys!
yw
ok last thing Use an addition property to solve for b. –12 + 16 = 16 + b A. –28 B. –12 C. 4 D. 12
i think B
Correct
thx
You want b alone on the right side. Since 16 is being added to b, you need to add something to 16 to make it zero. Additive inverses add to zero.
Its using communative property
Got 100% thx sooooooooo much u guys really helped
Your welcome :P
Good job
If you add -16 to 16 you get zero because -16 is the additive inverse of 16. The rule with an equation is you must add the same to both sides of the equation. Since you need to add -16 to the right side, you must add -16 to the left side too.
ok
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ok thx so much
:)
As you can see, b = -12, as you had written. Good job!
yw

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