Rational Equations

                    Lesson 1

                                                                                                                                                                          

                                                            Problem:                   Solve:  (x+2)/6 = (2x-5)/5

                                                             Solution                    (x+2)/6 = (2x-5)/5

                           Step 1:  

                     

                                                                                Solution                          5(x+2) = 6(2x-5); by cross multiplication.

 Step 2:                        

 

                                                            Solution                          12x-5x = 10+30; transfer similar terms

                                                            Step 3:

 

                                                             Solution                          7x = 40; x = 40/7

                                                            Step 4:

 

 Solution                    The answer is:  4

 Step 5:                                                                      

 Complete                                                                   

                                                                                  

                                             

                                                             Try two practice problems:  

 

                                                                                               Solve:

 

A.

4/(z+2) = 5/(z-4)

B.

(r+2)/3 = (r-3)/6

 

                                                                                               

        

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