Ma gandesc la un numar, il adun cu 5, iar dublul rezultatului il adun cu 7 si obtin un numar prim cuprins intre 18 si 22. La ce numar m-am gandit?
Va rog este urgenttt.
Dau coroana

Răspunsul a fost dat de: USER2956
31 Agustus 2025 matematica 5 minute
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Clasă: Education Materie: matematica
Ma gandesc la un numar, il adun cu 5, iar dublul rezultatului il adun cu 7 si obtin un numar prim cuprins intre 18 si 22. La ce numar m-am gandit?
Va rog este urgenttt.
Dau coroana
Întrebare a fost pusă de:
192 Vezi 192 Răspunsuri

Răspuns (192)

Cel mai bun răspuns
(65)
[(a+5)•2]+7=sa zicem 19
(a+5)•2=12
a+5=6
a=1
Răspunsul a fost dat în data 31 Agustus 2025
(58)
Poate fi 2
2+5=7
7*2=14
14+7=21

Răspunsul a fost dat în data 31 Agustus 2025

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