Simplify

-[4.2]


Would it Be Negative 4.2 because it's the Absolute Value of 4.2 then you multiply that by -1? Or is it just 4.2 because the - Doesn't matter

OK an example:

10-4.2=5.8
10-(4.2)=5.8.

so basically the 4.2 becomes negative.
And the - does matter.


post the full question next time so that we can see the whole thing:)

Um... That was the question xD
That's just it, It was Absolute Value

4x+9y=30; x=3

the absolute value is 4.2

The absolute value is the amount of digits the number is from 0 and it is always positive ex [2] = 2 [-2] = to you understand?