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Find-the-first-four-values-of-2x-5-1-mod-7-




Question Number 140449 by byaw last updated on 07/May/21
Find the first four values of  2x+5=1(mod 7)
Findthefirstfourvaluesof2x+5=1(mod7)
Answered by Rasheed.Sindhi last updated on 08/May/21
2x+5=1(mod 7)  2x≡1−5=−4(mod7)  ((2x)/2)≡((−4^(−2) )/2)(mod7)  x≡−2+7(mod7)  x≡5(mod7)  x≡5≡12≡19≡26(mod7)  5,12,19,26,...
2x+5=1(mod7)2x15=4(mod7)2x2422(mod7)x2+7(mod7)x5(mod7)x5121926(mod7)5,12,19,26,

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