How do you simplify #-4( x + 5) - 5x#?

1 Answer
Tony B
Nov 12, 2016

#-9x-20#

Explanation:

Multiply everything inside the bracket by #-4#

When multiplying or dividing, if the signs are different then the answer is negative. If they are the same the answer is positive.
Note that the #x# inside #(x+5) # is the same as #+x#.

#-4x-20-5x#

#-4x-5x-20#

#-9x-20#

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