Mathematics, 15.03.2020 22:49 jadea520

Which of these systems of equations has a solution of (6,-7)?
A. x-2y=20
2x-y=19
b. x-2y=20
2x+y=19
c. x+2y=20
2x-y=19
d. x+2y=20
2x+y=19

Answers: 1

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Which of these systems of equations has a solution of (6,-7)?
A. x-2y=20
2x-y=19
...