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Mathematics 20 Online
OpenStudy (anonymous):

(4a)/(3bc)-(15b)/(5ac) Ik the LCD is 15, where do i go from there?

OpenStudy (anonymous):

ohh so when adding or subtracting fractions u need teh same denomanator

OpenStudy (anonymous):

we have on the first fraction 3bc and the second 5ac so teh common denomanator wld be 15abc

OpenStudy (anonymous):

okay thanks.

OpenStudy (anonymous):

is that it or do u still need help?

OpenStudy (anonymous):

after i get the same denomanator would i multiply the 4a by 5 ac? and the 15b by 3bc?

OpenStudy (anonymous):

kinda like cross multiply?

OpenStudy (anonymous):

ok the 4a is by 5c and the15b by by 3b

OpenStudy (anonymous):

noo its not like cross mutiplying imo

OpenStudy (anonymous):

oh... so when you multiply the 4a by 5c the a's cancell each other out???

OpenStudy (anonymous):

okkk let me show u give me a sec

OpenStudy (anonymous):

okay....

OpenStudy (anonymous):

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