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Math prob

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1. Multiply both sides of the equation by x to get the variable out of the denominator.

x/2 = 40

2. Multiply both sides of the equation by 2 to get the x all by itself

x = 80

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http://www.wolframalpha.com/input/?i=1/2+%3D+40/x
http://www.wolframalpha.com/input/?i=1/2+%3D+40/(2+%2B+3x/2)

Gotta love wolfram alpha :)

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Quote:
Original post by incin
http://www.wolframalpha.com/input/?i=1/2+%3D+40/x
http://www.wolframalpha.com/input/?i=1/2+%3D+40/(2+%2B+3x/2)

Gotta love wolfram alpha :)


Wow, yes...yes that is awesome.

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Another way to think about this :
1/2 = 40/x

2 is 2 times the amount of 1, then that means from above x needs to be 2 times the amount of 40,so x = 2*40 = 80. Thus x = 80.

[Edited by - Concentrate on December 14, 2010 3:45:26 PM]

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