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posted by Sunday on Saturday, November 10, 2012 at 2:40am.

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

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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