anonymous
  • anonymous
What is the value of a? 5(a-4)-8a=55
Mathematics
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
@pooja195
pooja195
  • pooja195
Start by distributing |dw:1449354692090:dw| What do you get?
anonymous
  • anonymous
???

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More answers

pooja195
  • pooja195
What do you get once you distribute?
pooja195
  • pooja195
5 x a=? 5 x -4=?
anonymous
  • anonymous
5 x -4=-20
pooja195
  • pooja195
ok good \[\huge~\rm5a−20−8a=55\] combine like terms is the next step \[\huge~\rm~(5a−8a)+(−20)=55\]
pooja195
  • pooja195
5-8= =?
anonymous
  • anonymous
-3???????
pooja195
  • pooja195
Yes :) \[\huge~\rm~−3a−20=55 \] From here solve for a im sure you can do it :)
anonymous
  • anonymous
-3a=55 am i correct so far?
pooja195
  • pooja195
you need to add 20 to both sides...
anonymous
  • anonymous
hmm i did it wrong
pooja195
  • pooja195
Try again
pooja195
  • pooja195
\[\huge~\rm~−3a−20+20=55+20\]
anonymous
  • anonymous
-3a-40=75?
pooja195
  • pooja195
-20+20=0 55+20=?
anonymous
  • anonymous
ohh -20 oooppsss
anonymous
  • anonymous
-3a=75
pooja195
  • pooja195
Good now divide both sides by -3 -3/-3=1 so just a 75/-3=?
anonymous
  • anonymous
11.6?
pooja195
  • pooja195
Nope... what is 75 divided by -3?
anonymous
  • anonymous
wait i used the wrong number
anonymous
  • anonymous
-25
pooja195
  • pooja195
Well done :)
anonymous
  • anonymous
YOU ARE SOOOO AWESOME THANK YOU
pooja195
  • pooja195
yw ^_^

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