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(6 + 7) + 8 = 21

Choose an equivalent addition sentence that shows the associative property of addition.
A.
(6 + 7) + 8 = 21
B.
6 + (7 + 8) = 21
C.
6 + 7 + 8 = 21
D.
21 = (6 + 7) + 8

Respuesta :

carlosego

Answer: [tex]6+(7+8)=21[/tex]

Step-by-step explanation:

1. By definition, the associative property of addition is:

[tex](a+b)+c=a+(b+c)[/tex]

This property says that you can group the numbers in different ways and you will obtain the same result.

2. Therefore, if you have the following expression:

[tex](6+7)+8=21[/tex]

You apply  the Asociative property of addition by regrouping the numbers as following:

[tex]6+(7+8)=21[/tex]

3. Then, you can conclude that the correct option is B.



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