I want to find d from 7*d mod 40=1 But error .help me please.

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Sakunrat Jaejaima on 21 Jun 2015

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Commented: Sakunrat Jaejaima on 22 Jun 2015

Accepted Answer: Azzi Abdelmalek

I tried the codes but thereis no error shown. Matlab instead asked for/tried to open some matlab files

syms d Eqn=='7*d==1'; Sold=solve(eqn,d,Domain=Dom::IntegerMod(40))

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Accepted Answer

Azzi Abdelmalek on 21 Jun 2015

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https://se.mathworks.com/matlabcentral/answers/224718-i-want-to-find-d-from-7-d-mod-40-1-but-error-help-me-please#answer_183454

Edited: Azzi Abdelmalek on 21 Jun 2015

Open in MATLAB Online

syms d
Eqn=7*mod(d,40)-1;
Sold=solve(Eqn,d)

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Sakunrat Jaejaima on 21 Jun 2015

7*d mod 40==1 ans 23 Why you do = 1/7

Sakunrat Jaejaima on 22 Jun 2015

I want to solve the equation in mod.what to do

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