DF001
  • DF001
How can I solve this problem in LCD method?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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DF001
  • DF001
|dw:1441761645186:dw|
DF001
  • DF001
I know the first step is to flip the second fraction but I am lost after that
DF001
  • DF001
|dw:1441761884045:dw|

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More answers

anonymous
  • anonymous
It looks like they want a different method. one denominator is 9 the other is 3x, so the LCD will be 9x.
anonymous
  • anonymous
multiply by 9x/9x
anonymous
  • anonymous
|dw:1441761936372:dw|
DF001
  • DF001
How do you figure that the lcd is 9x
anonymous
  • anonymous
then cancel|dw:1441761977491:dw|
DF001
  • DF001
can you also show me the alternative method that they may want me to use?
anonymous
  • anonymous
lcd is 9x because you need one part of each thing in the denominators. so you need 3x and 9. Since 3 is a factor of both, it's 9x
anonymous
  • anonymous
This is the alternative method where you multiply by 9x/9x on top and bottom.
anonymous
  • anonymous
the other one is where you flip. did you want to go through this both ways?
DF001
  • DF001
im sorry i stepped out for a second I want to use the alternative way, please show me
anonymous
  • anonymous
the lcd is 9x, so you have to multiply both fractions by it and then the denominators will cancel |dw:1441762561073:dw|
anonymous
  • anonymous
understand?
DF001
  • DF001
I think I do now but a little kinks i need to figure out myself :)
DF001
  • DF001
ill work on the question with your steps for a bit, ill try to get back to this after im done
DF001
  • DF001
wait but, if i flip the other fraction when multiplying, doesnt the lcd change?
anonymous
  • anonymous
ok. the only thing left is to factor the new denominator (3x - 18) to 3(x - 6) then you can cancel more|dw:1441762727663:dw|
DF001
  • DF001
|dw:1441762755407:dw|
anonymous
  • anonymous
if you're multiplying you don't use the lcd, you factor and cancel
DF001
  • DF001
oh, do i factor 3x-18
anonymous
  • anonymous
|dw:1441762803117:dw|
anonymous
  • anonymous
yes, same solution with both methods
DF001
  • DF001
ah i see now

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