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31 January, 10:23

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

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Answers (2)
  1. 31 January, 13:24
    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
  2. 31 January, 14:02
    0
    the answer to 7x-4y=20 for y when x=3 is y = 25 i think
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