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31 October, 16:25

9x + 5y = 28 5x + 9y = 56 The solution set for the system of equations is. NextReset

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  1. 31 October, 17:04
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    The solution set would be (-0.5,6.5). Make sure to put the negative first since it is the smaller number.
  2. 31 October, 18:25
    0
    5 (9x+5y=28) - 9 (5x+9y=56) = 0

    (45x+25y=140) - (45x+81y=504) = 0

    45x+25y-45x-81y=-364

    -56y=-364

    y=6.5, now use either original equation to solve for x ...

    9x+5 (6.5) = 28

    9x+32.5=28

    9x=-4.5

    x=-0.5

    So the single solution (x, y) is (-0.5, 6.5)
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