Matematică
michiiii1
2021-02-23 04:23:30
Calculati suma tuturor numerelor de treicifre, care impartite la 31 dau restul 13
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nicolemugur
2021-02-23 05:46:35

x:31=c rest 13 x=31c+13 x-13=31c+13-13 x-13=31c x-13∈M31 M31={31,62,93,124,155,186,217,248,279....} x-13=93 x=93+13 x=106 106:31=3 rest 13  e bun x-13=124⇒x=137  137:31=4 rest 13 x-13=155⇒x=168 168:31=5 rest13 x-13=186⇒x=199  199:31=6 rest 13 nr.sunt:106,137,168,199.......

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