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27 February, 15:33

7x-4y=20 for y when x=3

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Answers (2)
  1. 27 February, 15:43
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    the answer to 7x-4y=20 for y when x=3 is y = 25 i think
  2. 27 February, 16:02
    0
    I think it is y=-.25

    7*3 - 4y = 20

    21 - 4y = 20

    subtract 21 from each side

    - 4y = - 1

    divide each side by - 4

    y = -.25
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