Solving One-Step Equations. Word List variable term expression coefficient equation algebra.

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Presentation transcript:

Solving One-Step Equations

Word List variable term expression coefficient equation algebra

Types of Equations Addition x + 5 = 15 Subtractionn – 3 = 7 Multiplication2x = 14 Divisionn = 6 5

Inverse Operations To solve equations we use inverse operations. OperationInverse AdditionSubtraction Addition MultiplicationDivision Multiplication

Solving addition equations

What type of equation is this? What inverse operation should you use?

Subtract 3 from both sides of the equation

Solving subtraction equations

What type of equation is this? What inverse operation should you use?

Add 8 to both sides of the equation x = 20

Practice Problems 1) m – 4 = 9 2) 12 = s – 3 3) x – 7 = 21 4) 15 = r - 5

Model magic

x x =

x

USE EACH KEY TO WRITE THE EQUATION REPRESENTED BY EACH PICTURE. THEN, SOLVE EACH EQUATION What equation is modeled?

Example:

Four in a Row FIND THE EQUATION BEING MODELED