Točno
26. srpnja 2014. 00:13 (10 godine, 7 mjeseci)
Sakrij rješenje
Koliko je

, ako je

? (to jest

)
%V0
Koliko je $x$, ako je $x \equiv 2^{-1} \pmod 7$? (to jest $x \equiv \frac{1}{2} \pmod 7$)
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
jer
%V0
$x \equiv 4 \pmod 7$ jer $2\cdot 4 \equiv 1 \pmod 7$
28. srpnja 2014. 18:58 | ikicic | Točno |