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Solve the value of y for the given values of x: 4x = 3y - 7; x = 4,5,6

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  1. 9 July, 09:18
    0
    Thhe easiest way would be to solve for y first

    4x=3y-7

    add 7

    4x+7=3y

    divide both sides by 3

    (4x+7) / 3=y

    try each

    x=4

    (4 (4) + 7) / 3=y

    (16+7) / 3=y

    (23) / 3=y

    7 and 2/3=y

    (4,7.66666)

    x=5

    (4 (5) + 7) / 3=y

    (20+7) / 3=y

    (27) / 3=y

    9=y

    (5,9)

    x=6

    (4 (6) + 7) / 3=y

    (24+7) / 3=y

    (31) / 3=y

    10 and 1/3=y

    (6,10.333)

    (4,7.66666)

    (5,9)

    (6,10.333)

    when x=4, y=7 and 2/3

    when x=5, y=9

    when x=6, y=10 and 1/3
  2. 9 July, 09:26
    0
    Rearranging the equation gives y = (4x + 7) / 3. Directly substitute the values of x given to the equation.

    A. 4 : y = ((4) (4) + 7) / 3 = 23/3

    B. 5 : y = ((4) (5) + 7) / 3 = 9

    C. 6 : y = ((4) (6) + 7) / 3 = 31/3
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