How do you simplify #-50- 2[ 3( 1- f ) - 3( - 2+ f ) ]#?
Any simplification problem can be solved by following the BEDMAS law* : Brackets, Exponents, Division, Multiplication, Addition, Subtraction. Work in this order and you'll get it right.
First, expand all the brackets by multiplying the outside term with each of the inside ones, working from the inside out:
Now add like terms, and expand again:
Then just add like terms again:
And that's the answer! Remember that when multiplying positives and negatives, the answer is positive if the the signs are the same, and negative if they're different.
* Even those stupid Facebook ones...
** Order of Operations