How do you combine #4( \frac { 1} { 8a } - 3) - \frac { 1} { 2} a#?

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Answer 1 · 2017-12-19T21:19:20

Answer below...

We must use our algebra knowledge:

First expanding:

# 4/(8a) - (4*3) -1/2a#

#=> 4/(2*4*a) - 12 -1/2a #

#=> cancel(4) / ( 2* cancel(4) * a ) -12 -1/2a #

#=> 1/(2a) -12 -1/2 a #

If you need to put into one singular fraction:

We can find the common denominator

#=> 1/(2a) -(12*2a)/(2a) - a^2 / (2a) #

They now all have the same denominator:

#=> (1 - 24a - a^2)/(2a) #