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Solving Systems of Equations Using ELIMINATION First, you should make sure that one set of variables has opposite coefficients. Solve the system of equations by using elimination. Fill in each blank, then hit "OK". { (-4) + 5y = 1 -2x - 5y = 11 -x + 5y = 1 5y = y = answer + -2x - 5y = 11 -x + 5y = 1 ( , ) x = = 12 + Solve the system of equations by using elimination. { -2x + 2y = 8 4x - 2y = 6 Solution: x = x = 14 ( , ) 4( ) – 2y = 6 4x - 2y = 6 – 2y = 6 –2y = y = + Solve the system of equations by using elimination. -3x + 18y = 15 3x - 4y = -1 y = = Solution: 3x – 4( )= -1 ( , ) 3x – 4y = -1 3x – = -1 3x = x = + First solve for y. Then solve for x. -6x + 21y = -24 6x - 4y = 24 the x-coordinate is the y-coordinate is y = + { Solve the system using eliminaton. 6x + 4y = 6 x - 4y = -13 x = x = Solution: ( , ) 6( ) + 4y = 6 6x + 4y = 6 + 4y = 6 4y = y = Congratulations! You finished the activity! |