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21 July, 10:46

Solve for the equation

13/2 - 1/2x = - x + 7/3

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Answers (2)
  1. 21 July, 10:53
    0
    0.1167 or - 4.2833

    Step-by-step explanation:

    13/2 - 1/2x = - x + 7/3

    Collect like terms

    -1/2x+x=7/3-13/2

    Using LCM

    (-1+2x²) / 2x = (14-39) / 6

    (-1+2x²) / 2x=-25/6

    Cross multiply

    6 (-1+2x²) = -25 (2x)

    -6+12x²=-50x

    12x²+50x-6

    Solve using formulae method

    -b± (√b²-4ac) / 2a

    Where a=12, b=50 and C=-6

    (-50± (√50²-4 (12) (-6))) / 2 (12)

    (-50± (√2500+288)) / 24

    (-50±√2788) / 24

    (-50±52.8) / 24

    (-50+52.8) / 24 or (-50-52.8) / 24

    2.8/24 or - 102.8/24

    0.1167 or - 4.2833
  2. 21 July, 11:09
    0
    x = - 25/3

    Step-by-step explanation:

    13/2 - 1/2x = - x + 7/3

    Multiply each side by 6 to get rid of the fractions

    6 (13/2 - 1/2x) = 6 * (-x + 7/3)

    39 - 3x = - 6x + 14

    Add 6 to each side

    39 - 3x+6x = - 6x+6x + 14

    39 + 3x = 14

    Subtract 39 from each side

    39-39 + 3x = 14-39

    3x = - 25

    Divide each side by 3

    3x/3 = - 25/3

    x = - 25/3
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