Posted by Jet on Thursday, August 30, 2007 at 7:33pm.
I am working a problem, 'order of operations" ie, 100 a=4/5. I need to know if I mulitiply this? should I change the fraction to 4.5?

math  bobpursley, Thursday, August 30, 2007 at 7:42pm
I would divide th 4 by 5, which is .8

math  Anonymous, Thursday, August 30, 2007 at 7:46pm
You can multiply 5 to both sides of the equal sign to get rid of the denominator. Then divide to get rid of the variable, a. Last reduce fraction.

math  Anonymous, Thursday, August 30, 2007 at 8:08pm
You can multiply 5 to both sides of the equal sign to get rid of the denominator, 5(100a)=4/5(5); The 5's will cancel each other out to 500a=4. Then divide to get rid of the variable a, 500a/500=4/500. 500 cancel each other out which leaves a=4/500. Last reduce fraction, a=1/125 or a=0.008.
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