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                                         SYSTEM OF EQUATIONS-SUBSTITUTION #1

Directions:  Solve each system of equations below by the substitution method. Substitute the value of a variable                        
                     from one equation into the other equation, then solve that equation for x or y.

1)      4x + y = 20               			 2)     8x + y = 18			        3)     x + 8y = 17

          y = 2x + 2                     		          y = 3x - 22 			                 x = y + 8

      4x + (2x + 2) = 20

         x =______     y =______                       x =______     y =______                          x =______     y =______

4)      4x + y = 40			             5)     9x + y = 58			        6)     x + 8y = 21

          y = x 		                                              y = 2x – 8 			                  x = 2y + 1 

         x =______     y =______                       x =______     y =______                          x =______     y =______

7)     24x + y = 79			             8)      x + 2y = 10			        9)    36x + y = 185

        y = 3x – 2 		                                   x = y + 1			                  y = 5x - 20

         x =______     y =______                       x =______     y =______                          x =______     y =______

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