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14.9x+1/3 (-12-27x)-33.2 , x=-3simplify the expression using the properties of operations.

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14.9x+1/3 (-12-27x)-33.2

Using PEDMAS;

First, let's open the parenthesis

14.9x - 4 - 9x - 33.2

Rearrange

14.9x - 9x -4 -33.2

5.9x - 37.2

But from the question x= -3

Substitute x=-3 in the above;

5.9(-3) - 37.2

-17.7 - 37.2

-54.9

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