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Submitted by pauly3255 on Wed, 2012-02-29 00:48
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answered 2 time(s)
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Submitted by sondrago on Wed, 2012-02-29 06:57
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price: $0.50

Simple and clear

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add x both sides xx get
1+4+x=1+2 xxx 5
5+x=3 mod x
since 5=0 xxx 5
xxx mod x

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Submitted by dayamath on Wed, 2012-02-29 04:03
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price: $1.00

complete answer:

body preview (36 words)

4+x=2(mod5) thus 4+x xx x x -4 xxxxxx
thus x = xx (mod5). xx know xxxx x = 5(mod5) xxxx x+0 x xxxx xxxxxx
xxxx x x xxxxxxx
xxxx x = 3 x 5k with k belongs to Z

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