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20 July, 01:49

Solve the equation - 2/3x - 3/4x = 5/6.

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Answers (2)
  1. 20 July, 03:32
    0
    common denumerator is 12

    -8/12x-9/12x=10/12

    -17/12x=10/12 <
    -17x=10

    x=-0.59
  2. 20 July, 05:29
    0
    -2/3x - 3/4x = 5/6.

    Find the common denominator for - 2/3x and - 3/4x. The common denominator is 12.

    Multiply by 4 for - 2/3x. (-2) (4) / 3 (4) x=-8/12x

    Multiply by 3 for - 3/4x. (-3) (3) / 4 (3) x=-9/12x

    -8/12x-9/12x=5/6

    -17/12x=5/6

    Multiply both sides by - 12/17

    (-17/12x) (-12/17) = 5/6 (-12/17)

    Cross out - 17 and 17, divide by 17. Then becomes 1.

    Cross out - 12 and - 12, divide by - 12. Then becomes 1.

    1*1*x=x

    Cross out 6 and - 12, divide by 6. 6/-6=1, - 12/6=-2

    5*-2/17=-10/17

    Answer: - 10/17
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