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4C/(10C-5D) + 2D/(6C-3D)

Please include workings thx

  • Math -

    The common denominator is (30C - 15D).

    4C/(10C-5D) + 2D/(6C-3D)
    = (12C + 10D)/(30C - 15D)
    = 2(6C + 5D)/15(2C - D)
    = (2/15)[(6C +5D)/(2C -D)].

    I see no further simplifications.

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