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10-01-2016
Mathematics

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Two times the sum of nine and a number is the opposite of 9.
Write an equation and solve.

Respuesta :

Аноним Аноним

10-01-2016

- - 2*-9x

This is because you have "two times" which is 2*

The sum of a number = x

Opposite of 9 = -9

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