# 5. Fluently solve two-step equations with rational coefficients by multiplying (FP)

teaches Common Core State Standards CCSS.Math.Content.7.EE.A.1 http://corestandards.org/Math/Content/7/EE/A/1
teaches Common Core State Standards CCSS.Math.Content.7.EE.A.2 http://corestandards.org/Math/Content/7/EE/A/2
teaches Common Core State Standards CCSS.Math.Practice.MP6 http://corestandards.org/Math/Practice/MP6

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Lesson objective: Fluently solve equations of the form px + q = r with rational coefficients by multiplying.

This lesson helps to build fluency with two-step equations.  This work develops students' understanding that performing the same operation on both sides of an equation can help us solve.

Students engage in Mathematical Practice 6 (Attend to precision) as they multiply by the lowest common denominator to solve equations.

Key vocabulary:

• lowest common denominator

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