1. 7.3 Solving Systems of Equations by Elimination Using Multiplication 33 22 11 Solve by Elimination Example Problems Practice Problems

2. Multiply, Then Use Elimination  If the coefficients of either variable in the first equation DO NOT match the corresponding coefficients in the second equation:  Multiply one equation by a number that will make one of the coefficients of a variable match in both equations  Follow the elimination steps 2

3. Multiply, Then Use Elimination Example 3

4. Multiply, Then Use Elimination Example (Cont.) 4

5. Another Example  An untrue solution identifies and Inconsistent System  That means the lines won’t cross… 5

6. Practice Problems  Page 391 Problems 13-39 (odd) 6