Step-by-step Answer
PAGE: 439SET: ExercisesPROBLEM: 3
Please look in your text book for this problem Statement

The equations are

                                 (Equation 1)

                                      (Equation 2)

Since , substitute for y in the second equation.

                                     (Equation 2)

                       (Replace )

                                 (Subtract: )

Apply addition property of equality: Add 4y to each side.

                  (Apply additive inverse property: )

                         (Apply additive identity property: ) 

                               (Add: )

Apply division property of equality: Divide each side by 5.

                               (Cancel common terms)  

                                    (Divide: )

Now Substitute 3 for y in either equation to find the value of x.

                                   (Equation 1)

                               (Replace y by 3 )

                                   (Multiply: )

                                              (Subtract: )

The solution is

The solution is .


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