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Cornell Notes in Math – IN pg 55 Class Notes If there was no class lecture this week, write a pargraph about what you learned and/or questions about what you didn’t understand-- Name: Class: Pre-algebra Period: 2/5 Reference: pg 84-88 Date: October 18, 2010 Questions/Main Ideas: Notes: Solving Equations with Addition and Subtraction What is the inverse operation for add? sub? multi? division? Inverse operations – opposite operation, used to undo, reverse an operation inverse operations addition – subtraction multiplication -division What does it mean to isolate the variable? Goal: Isolate the variable – find out the value of the variable Solve equation How do you solve and equation? 1. Use inverse operation to get the variable by itself. 2. Whatever you do to one side MUST be don toe both sides of the equal sign x + 6 =4 e +(-43) = 45 -6 -6 +43 +43 x = -2 e= 88 note: used the inverse of the integer not the operation Summary:
