2. Definitions of the Day (DODs) 4.2a – Solving Equations Variable on one side Inverse Operation Variable Expression Equation

3. Definition: Inverse Operations – Operations that undo each other. OperationInverse Operation + − − + × ÷ ÷ ×

4. Definition: Variable – A letter or symbol used to represent a number. Definition: Equation – A statement where two expressions are set equal to each other. Definition: Expression – A phrase in math that uses numbers, variables and operations.

5. 1. (leave blank…not needed today) Three Simple Steps to Equation Solving Success 2. (leave blank…not needed today) 3. Using inverse operations, move the variable to one side of the “=” and everything else to the other side.

6. SOLVE EACH EQUATION

7. A simple way to “deal” with fractions in equations. Introducing “Fraction Busters” Wanna think? Then multiply EVERY term in the equation by the least common denominator of the fractions Don’t Wanna think? Then multiply EVERY term in the equation by the product of all denominators of the fractions

8. SOLVE EACH EQUATION

9. Your Turn!! 1.Solve:

10. Sentence Frames 1.A variable is a … ____________________________________________ ____________________________________________ 2.Inverse operations are operations that … __________ ___________________________________________