Mathematics, 28.12.2019 04:31, ChessieGiacalone

Given the system of linear equations. choose all of the options that could be used to solve the system using addition
x + y =7
2x + y=

multiply the first equation by -1 and add the equations together.

multiply the second equation by -1 and the first equation by -1, then add the equations together.

multiply the second equation by -1 and add the equations together.

multiply the first equation by -2 and add the equations together.

multiply the first equation by 2 and the second equation by -1, then add the equations together

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Given the system of linear equations. choose all of the options that could be used to solve the syst...