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28 September, 19:39

3x-5y=7, x=2y+4 solve by system of equation

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  1. 28 September, 20:17
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    3x-5y=7, x=2y+4

    substitute x=2y+4 into 3x-5y=7

    3x-5y=7

    3 (2y+4) - 5y=7

    6y + 12 - 5y = 7

    y = - 5

    x=2y+4

    x = 2 (-5) + 4

    x = - 10 + 4

    x = - 6

    answer

    x = - 6 and y = - 5
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