Combining Like Terms (Part 1)

Fewer Terms

5 min

Problem

Write each expression with fewer terms. Show your work or explain your reasoning.

  1. 10x−2x10x-2x
  2. 10x−3y+2x10x-3y+2x

Answer

  1. 8x8x
  2. 12x−3y12x-3y

Sample Response

  1. 8x8x
  2. 12x−3y12x-3y
Responding to Student Thinking
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Response: By this point in the unit, there should be some student mastery of combining like terms. If students struggle, plan to make time to revisit related work in the lessons referred to here. See the Course Guide for ideas to help students re-engage with earlier work.

Standards
Addressing
  • 7.EE.1·Apply properties of operations as strategies to add, subtract, factor, and expand linear expressions with rational coefficients.
  • 7.EE.A.1·Apply properties of operations as strategies to add, subtract, factor, and expand linear expressions with rational coefficients.