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 Lesson 1, Problem 3

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Dojo
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PostSubject: Lesson 1, Problem 3   Sat Aug 16, 2008 1:03 pm

Find x in all the following:
a) 2x=4
b) 5x=25
c) 39x=3

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isabella2296
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PostSubject: Re: Lesson 1, Problem 3   Sat Aug 16, 2008 1:08 pm

Dojo wrote:
Find x in all the following:
a) 2x=4
b) 5x=25
c) 39x=3

a) x = 2
b) x = 5
c) x = 13
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AIME15
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PostSubject: Re: Lesson 1, Problem 3   Sat Aug 16, 2008 1:39 pm

Izzy on c, your wrong.

39x=3: divide by 39 to get
x=3/39
so x=1/13, not 13.
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PostSubject: Re: Lesson 1, Problem 3   Sat Aug 16, 2008 3:31 pm

AIME15 is right on c.
That's the little trick I thought I'd put in. Very Happy

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PostSubject: Re: Lesson 1, Problem 3   Sat Aug 16, 2008 3:53 pm

Oops, I thought it said 3x = 39.
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