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MIDDLE SCHOOL

Mathematics (Grade 7)

Expressions and Equations

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Expressions and Equations: Solving Linear Equations

Solving One-Step Equations

Description

Solving One-Step Equations

Introduction

A one-step equation can be solved using just a single inverse operation to isolate the variable. These equations arise frequently in real-world situations involving money, t...

Transcript

After buying a video game for $12.50, your digital wallet balance is −$4.25.

A negative balance means you spent more than you had and owe the wallet provider. Find your starting balance.

Let x represent your starting balance. Since you spent money, we subtract 12.50 from your starting money, which equals your final balance of −4.25.<...

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