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30 January, 22:30

4x+8=20 - 4x+4y=-10 Solve for X and Y

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  1. 30 January, 22:32
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    4x + 8y = 20

    -4x + 4y = - 10

    12y = 10

    y = 10/12 = 5/6

    4x + 8 (5/6) = 20

    4x + 40/6 = 120/6

    4x = 80/6

    x = 3 1/3 or 10/3

    4 (10/3) + 8y = 20

    40/3 + 8y = 60/3

    8y = 20/3

    y = 5/6
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