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MIDDLE SCHOOL

Mathematics (Grade 8)

Expressions & Equations

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Expressions & Equations: Solutions of Linear Equations

Systems of Equations with Elimination II

Description

Systems of Equations with Elimination II

Introduction

Systems of equations help us solve real-life problems with two unknowns, like comparing phone plans, ticket prices, or snack combos. Elimination is useful when adding or subtracting equations can make o...

Transcript

Nova buys two notebooks and one pencil for five dollars from a store, and her friend Liam buys three notebooks and two pencils for eight dollars. Nova wonders, what is the cost of one pencil?

Let x represent the cost of a notebook, and y represent the cost of a pencil. She writes the equations: 2x + y = 5 and 3x + 2y = 8.