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In this mastery check, you will solve systems ofequations using substitution. Type the expressions into each box to show how you could use substitution to solve each system. The final solutions will be in (x, y) form. Solve by Substitution Solve the given system of equations using substitution. The solution to the system is: 2( ) – y = 7 x = 52x – y = 7 y = – y = 7 ( , ) Solve the given system of equations using substitution. The solution to the system is: 5x – = –38 5x = y = 35x – y = –38 x = ( , ) Solve the given system of equations using substitution. The solution to the system is: 4x – ( )= 4x + = 4x = x = y = -14x – y = 25 ( , ) Solve the given system of equations using substitution. The solution to the system is: 3x = -2x = y = 3xy = 5x – 14 x = ( , ) Solve the given system of equations using substitution. The solution to the system is: 2x + 1 = + 1 = x = -6 y = 2x + 1y = -x - 5 x = ( , ) |