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16 July, 10:54

Solve by substitution. 7x+2y=-19 and - x+2y=21

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  1. 16 July, 11:15
    0
    7x+2y=-19

    - (-x+2y=21)

    8x=-40

    x=-5

    - (-5) + 2y=21

    2y+5=21

    2y=16

    y=8

    (-5,8)
  2. 16 July, 12:43
    0
    Are you looking for x to be 0 and then y to be 0

    Is this algebra 2?
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