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20 January, 01:46

Is (9,9) a solution of the following linear

system of equations?:

17x - 9y=72

X - 9y = - 72

+4
Answers (1)
  1. 20 January, 01:50
    0
    Yes

    (x, y)

    (9,9)

    17 (9) - 9 (9) = 72

    153 - 81 = 72

    (9) - 9 (9) = - 72

    9 - 81 = - 72
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