Question

Jakob is asked to simplify the expression –3a 4b 5a (–7b). He writes: –3a 4b 5a (–7b) = –3a 5a 4b (–7b). Which property allows him to do this? the associative property the commutative property the distributive property the additive identity property.

Answer 1

He is applying commutative property to solve the given problem.

Given that

Jakob is asking to simplify the expression -3a + 4b + 5a + (-7b).

He writes: -3a + 4b + 5a + (7b) = -3a + 5a + 4b + (7b).

We have to determine

Which property allows him to do this?

According to the question

Jakob is asking to simplify the expression -3a + 4b + 5a + (-7b).

The commutative property of addition can be used when adding more than two numbers as well and is often used in conjunction with the associative property of addition.

To solve the expression he is applying the commutative property of the addition.

Then,

The solution of the equation is,

$\rm -3a + 4b + 5a + (-7b)\\\\ -3a + 4b + 5a + (7b)$

Hence, he is applying commutative property to solve the given problem.

To know more about the Commutative property click the link given below.

https://brainly.com/question/45833

Answer 2

Answer:

In this equation, Jacob used the commutative property to bring the x and y together.  

Step-by-step explanation: