Algebra-1

To determine what 5+[7+(−3)] is also equal to, we should use the Associative Property of Addition.

The Associative Property of Addition states that the grouping of numbers in an addition operation does not affect the sum. It can be written as: (a+b)+c=a+(b+c).

Given the expression 5+[7+(−3)], we can re-group the numbers to use the Associative Property.

Let’s analyze the options:

A. (5 + 7) + (-3)

Using the Associative Property, we can regroup the expression: 5+[7+(−3)]=(5+7)+(−3)

First, calculate the inside of the parentheses: 7+(−3)=4

So, 5+4=9

On the other hand: (5+7)+(−3)=12+(−3)=9

T...