Posted by Bob on Sunday, November 21, 2010 at 8:19pm.
Are the following fractions equivalent? justify your answer
18/24 9/12 15/20 6/9

Math  Ms. Sue, Sunday, November 21, 2010 at 8:26pm
Three of the fractions = 3/4
One does not.

Math  Bosnian, Sunday, November 21, 2010 at 8:41pm
18=2*3*3
24=2*2*2*3
18/24=(2*3*3)/(2*2*2*3)=3/(2*2)=3/4
9=3*3
12=2*2*3
9/12=(3*3)/(2*2*3)=3/(2*2)=3/4
15=3*5
20=2*2*5
15/20=(3*5)/(2*2*5)=3/(2*2)=3/4
6=2*3
9=3*3
6/9=(2*3)/(3*3)=2/3
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