Question 910591
simplify the expression. 
3/4 X 5/7 X 14/15 X 8/9 
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= (3*5*14*8)/(4*7*15*9)
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Cancel the common "3" factor
Cancel the common "4" factor:
Cancel the common "5" factor
Cancel the common "7" factor
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= (1*1*2*2)/(1*1*3*3)
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= 4/9
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Cheers,
Stan H.