Question

Sierra says that she can simplify the side of the inequality shown by combining the terms within the parentheses but that she​ can't do the same thing on the side. Is Sierra​ correct? Explain.

Answer 1

Yes, Sierra is correct

Explanation:

Given

`4(y + 7) > -3 (4 + 5)`

Required

Is she correct

The right parenthesis has 4 + 5.

This can be simplified as:
`4 + 5 = 9`

So, we have:

`4(y + 7) > -3 (4 + 5)`

`4(y + 7) > -3 *9`

The left parenthesis has y + 7.

This cannot be simplified because y is a variable and 7 is a number.

Hence, Sierra is correct.