pokemon23
divide and express the quotient in lowest terms.
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pokemon23
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|dw:1332399859107:dw|
pokemon23
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|dw:1332399890688:dw|
pokemon23
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am I right so far....
Callisto
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yup
pokemon23
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what should I do next
Callisto
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cancel the common factors
pokemon23
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|dw:1332400143073:dw|
Callisto
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wait not exactly correct
Callisto
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for the first fraction, the upper part, you should take 6 as the common factor
pokemon23
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true
pokemon23
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now it makes sense
Callisto
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|dw:1332400270899:dw|
pokemon23
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pokemon23
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Callisto
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can you do it once again from the start, it's very messy
funinabox
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that answer is correct, just not in lowest terms
pokemon23
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|dw:1332400429451:dw|
Callisto
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and then?
Callisto
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see the 6 and 2
pokemon23
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|dw:1332400523110:dw|
pokemon23
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|dw:1332400541961:dw|
Callisto
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combine what you have then
pokemon23
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|dw:1332400582197:dw|
pokemon23
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am I right
funinabox
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your other previous answer (42/2x-4) was more correct.
when doing simplification, it helps to.... simplify, to see what needs to be done more clearly. for most problems you don't need to do this, but later it gets helpful to think along these lines:
funinabox
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pokemon23
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21
funinabox
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basically im saying 42/2(x-4) is the same thing as 42/2 * 1/(x-4)
42/2 is pretty simple arithmetic. Once you've got that simplified, just fit that back in to the expression.. and you've got the answer.
thats one of many ways to simplify things.
pokemon23
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im a bit confused
pokemon23
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isn't it 2(x-2)
Callisto
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|dw:1332401196080:dw|
pokemon23
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|dw:1332401292725:dw|
funinabox
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indeed. you could also divide by two.|dw:1332401294326:dw|
funinabox
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really the entire point is it does not matter how you simplify, as long as you are dividing or multiplying by "1", or keeping the overall expression equal.
you'll never end up with an incorrect answer this way lol