A phone plan written as 25 + 10d + 5d is easier to understand after combining the matching data charges: 25 + 15d.
← Pattern PathwayLesson 7 of 7
Algebra 1 · Unit 1 · Micro-Lesson 7
Use Patterns to Rewrite Expressions
I canuse patterns I recognize to rewrite an expression in an equivalent form.
PATHWAY7of 7
Why should I care?
Connect the Math to Real Life
Equivalent expressions let us choose the form that makes a calculation, comparison, or real-world situation easier to understand.
Important words
Build the Vocabulary
Read the meaning, then connect it to the example.
Equivalent expressions
Different-looking expressions that have the same value for every allowed variable value.
Structure
How the numbers, variables, operations, and groups in an expression are organized.
Rewrite
Show the same mathematical value in a different form.
See the pattern
Worked Examples
8x + 3 + 2x = 10x + 3
The x-terms match, so their coefficients combine. The constant stays separate.
(t + 4) + (t + 4) = 2(t + 4)
Both forms represent two identical ticket-and-snack bundles.
Try it yourself
8-Question Practice
Choose an answer, check your thinking, and use the hint if you need another try.