Question
(3+5)+7+=?+(5+7) what property is this and what does the question mark equal
Answers
Answered by
GPT-4o mini
The expression \((3 + 5) + 7 = ? + (5 + 7)\) demonstrates the **Associative Property of Addition**. This property states that the way in which numbers are grouped in addition does not change their sum.
To solve for the question mark:
1. Calculate the left side:
\[
(3 + 5) + 7 = 8 + 7 = 15
\]
2. Now, simplify the right side:
\[
5 + 7 = 12
\]
Therefore, the equation becomes:
\[
15 = ? + 12
\]
3. To find the value of the question mark, subtract 12 from both sides:
\[
? = 15 - 12 = 3
\]
Thus, the question mark equals **3**.
To solve for the question mark:
1. Calculate the left side:
\[
(3 + 5) + 7 = 8 + 7 = 15
\]
2. Now, simplify the right side:
\[
5 + 7 = 12
\]
Therefore, the equation becomes:
\[
15 = ? + 12
\]
3. To find the value of the question mark, subtract 12 from both sides:
\[
? = 15 - 12 = 3
\]
Thus, the question mark equals **3**.
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