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19 March, 08:56

Solve using the elimination method 3x+5y=9

X-20y = - 62

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  1. 19 March, 10:22
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    3x+5y=9 and x-20y=-62

    Multiply the first equation by - 4

    -4 (3x+5y=9) = - 12x-20y=-36

    Then subtract the two equations:

    -12x-20y=-36

    - (x - 20y=-62)

    -13x+0y=26

    -13x=26

    x=-2

    3 (-2) + 5y=9

    -6+5y=9

    5y=15

    y=3
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