3. a. Explain what 3(2x – 5) means, then simplify.
b. Write 3(2x – 5) in three different ways.
How can you use what we’ve learned about integers and what we know about writing expressions with
parentheses to rewrite expressions that have “ – “ in the groupings?
Write the expression below in an equivalent form. If necessary, draw a model.
4. 3(x + 2)
5. 2(3x + 5)
6. 3(x + 1)
7. 4(3x – 1)
8. 2(3 + x)
9. 3(3x – 2)
10.
!
!
4! + 6
11.
!
!
2! − 5
12. 0.2(7x – 9)
In sixth grade, you talked about order of operations, what is the order of operations and how is it related to what
you’ve been doing above?
7WB3 - 51
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