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Question
Submitted by pauly3255 on Tue, 2012-02-28 23:48
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4+x=2(mod5)

4+x=2(mod5)

Answer
Submitted by sondrago on Wed, 2012-02-29 05:57
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Simple and clear

body preview (17 words)

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


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Answer
Submitted by dayamath on Wed, 2012-02-29 03:03
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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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