Mathematics, 03.05.2020 14:06, nook4boo

Which of these systems of linear equations has an infinite number of solutions?
3 x minus 8 y = 21. 6 x minus 16 y = 46.
3 x + 6 y = 22. 6 x + 12 y = 44.
5 x + 7 y = 24. 10 x minus 14 y = 48.
5 x minus 9 y = 20. 10 x + 18 y = 40.

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Which of these systems of linear equations has an infinite number of solutions?
3 x minus 8 y...