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31 May, 05:52

Solve z = 3x + 5xy for y

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Answers (2)
  1. 31 May, 06:59
    0
    y=z/5x-3/5
  2. 31 May, 08:56
    0
    z = 3x + 5xy

    move 3x to the other side

    sing changes from + 3x to - 3x

    z-3x=3x-3x+5xy

    z-3x=5xy

    divide both sides by 5x to get y by itself

    z/5x-3x/5x=5xy/5x

    cross out 5x and 5x

    divide by 5 and x

    then becomes 1*1*y=y

    -3x/5x (cross out x and x)

    then becomes - 3/5

    Answer:

    y=z/5x-3/5
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