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Simplify the following expression as far as possible. 1. 9x - 2x .2. -3y - 30y . .3. 2a - 9a

  • Math -

    1.

    9 x - 2 x = 7 x


    2.

    - 3 y - 30 y = - 33 y


    3.

    2 a - 9 a = - 7 a

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