Simplify #20 - (2 * 4f) + (2 * 9) + (7 * 2f) - (7 * 6) + 11#?

1 Answer
Dec 18, 2016

Answer:

#6f + 7#

Explanation:

First, expand all the terms within parenthesis paying close attention to the signs both inside and outside the parenthesis:

#20 - (2*4f) + (2*9) + (7*2f) - (7*6) + 11#

20 - 8f + 18 + 14f - 41 + 11#

Next we can group like terms:

#-8f + 14f + 20 + 18 - 42 + 11#

Now we can combine like terms:

#(-8 + 14)f + 7#

#6f + 7#