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