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sammixboo (sammixboo):
First do what is in the parenthesis
OpenStudy (alexandervonhumboldt2):
first make the denominator the same in the brasket
sammixboo (sammixboo):
3/5 - 1/2
We have to make them have the same denominators
sammixboo (sammixboo):
So that means we have to find the LCD which is Lowest Common Denominator. To find this, find the multiples of 5 and 2
OpenStudy (anonymous):
so ugh tell me im lost
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sammixboo (sammixboo):
Then after you find some of the multiples of 5 and 2, which are
Multiples of 5 - 5, 10, 15, 20...
Multiples of 2 - 2, 4, 6, 8, 10, 12...
You find the lowest number they have in common
OpenStudy (anonymous):
10
OpenStudy (alexandervonhumboldt2):
yes
sammixboo (sammixboo):
So look at this
Multiples of 5 - 5, 10, 15, 20...
Multiples of 2 - 2, 4, 6, 8, 10, 12...
What number is the lowest number that are both in the Multiples of 5 and 2
OpenStudy (alexandervonhumboldt2):
correct
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OpenStudy (anonymous):
oka so what else im in need of help @AlexandervonHumboldt2
sammixboo (sammixboo):
Right, so that means we multiply 3/5 by 2 and 1/2 by 5
So what is \(\dfrac{3*2}{5*2}\)
And what is \(\dfrac{1*5}{2*5}\)
OpenStudy (alexandervonhumboldt2):
now multiply first fraction by 2/2 and second fraction by 5/5
sammixboo (sammixboo):
Sorry, multiply the numerator and denominator of 3/5 by 2 and the numerator and denominator of 1/2 by 5.
OpenStudy (anonymous):
so its going to be 6/10 and 5/10 @AlexandervonHumboldt2
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OpenStudy (alexandervonhumboldt2):
just now subtract 6/10-5/10=????
OpenStudy (alexandervonhumboldt2):
yes
sammixboo (sammixboo):
6/10 - 5/10 is the same as \(\dfrac{6-5}{10}\)
OpenStudy (anonymous):
so its 1/10 @sammixboo @AlexandervonHumboldt2
OpenStudy (alexandervonhumboldt2):
yes
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OpenStudy (alexandervonhumboldt2):
now multiply 1/10*3/8=(1*3)/(10*8)
OpenStudy (anonymous):
3/80 wait is this the answer @AlexandervonHumboldt2