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

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Sakunrat Jaejaima 2015-6-21

评论： Sakunrat Jaejaima 2015-6-22

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))

Azzi Abdelmalek 2015-6-21

编辑：Azzi Abdelmalek 2015-6-21

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

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

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

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