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9 December, 14:24

Solve the system of equations. in this form: (x, y)

-5y + 8x = - 18

5y + 2x = 58

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Answers (1)
  1. 9 December, 14:28
    0
    If we add the equations it looks like

    -5y + 8x + 5y + 2x = - 18+58

    so 10x=40

    so x=40/10=4

    now let's replace x by 4 in the second equation

    5y + 2*4=58

    5y=58-2*4=58-8=50

    so y=50/5=10

    so (x, y) = (2, 10)
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