if A :B =2:3,B:C =5:6 ,find A:C
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Simplify the following:3xy2−5x2y+7xy−8xy2−4xy+6x2y
ANSWER
3xy2−5x2y+7xy−8xy2−4xy+6x2y
=3xy2−8xy2−5x2y+6x2y+7xy−4xy
=−5xy2+x2y+3xy
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