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## 8th grade (Illustrative Mathematics)

### Course: 8th grade (Illustrative Mathematics) > Unit 4

Lesson 9: Lesson 10: On or off the line?# Solutions of systems of equations

CCSS.Math: 8.EE.C.8, 8.EE.C.8b, HSA.REI.C.6, HSA.REI.D.11

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