Question

Va rog frumos sa ma ajutati
(2n+3)/121

Answer 1

(2n+3) | 121
=>$(2n+3) \in D_{121}$

$D_{121} \in |N$

$D_{121}=${1; 11; 121}

=>$(2n+3) \in${1; 11; 121}

=>$2n \in${1-3; 11-3; 121-3}

=>$2n \in${-2; 8; 118}

=>$n \in${-2:2; 8:2; 118:2}

=>$n \in${-1; 4; 59}