Given 17 books.
Total 56 b<span>ooks.
How many books were in her collection before her teachers donation?
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First lets write an equation:
b = books before
17 + b = 56
Lets solve for b:
17 + b = 56
Inverse Operation:
56 - 17 = b
56 - 17 = 39
b = 39
Check:-
17 + b = 56
17 + 39 = ?
17 + 39 = 56
Correct!
There were 39 books in her collection before her teacher donated her books.
The equation is: 17 + b = 56.
b = 39
Answer: probly d
Step-by-step explanation:
a ,b ,and c are subtracting makeing it hard top get something that was not in the problem
The property applied is the associative property
<h3>Algebraic properties</h3>
There are several algebraic properties in mathematics; each of which have their own applications
Some of these properties are:
- Commutative
- Distributive
- Associative
- Identity
The mathematical expression is given as:
And it is calculated as follows:
The property applied above is the associative property
Read more about mathematical properties at:
brainly.com/question/10628093
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