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linear congruence: complete soln: 4x(is equivalent to) 5(mod 21) @Mathematics

Calculus1
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when I did the EEA I got 4(-5) + 21(1) = 1
but then you have to mult by 5
then x=xnot+bn/d

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Other answers:

when I multiplied by 5 I got 4(-25) + 21(5) = 5
o ya then xnot is -25
x=-25+21n
your way of writing things is different then how I did it
you have to find all solutions
yeah I got x is congruent to 17 (mod 21)
k so where do i go from here
from the EEA you just convert it back into congruent form I think
so x is congruent to -25 is congruent to what
so 4(-25) congruent to 5 (mod 21) so x congruent to -25 (mod 21/1) is the complete solution and that is equivalent to x congruent to 17 (mod21/1
since (-25) is some solution for x
then you just put it into the Linear Congruence Theorem, V1
to get the complete solution
o crap ok now i see it
I don't know this stuff super well either lol
did you show eea?
yeah I put it in there
but theres no room
the EEA for those were really short so I just wrote it in there tiny
have you done any other problems on the assignment? I'm stuck on 5c lol
only up to 3
ok well I guess I might try asking on here again then
metoo
4x(is equivalent to) 5(mod 21) 21 | 4x-5 21|4*(-4)-5 Hence -4 is a solution. ??? I am not sure.
i dunno

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