If a, b, c are non-negative integers less than 7 such that
\(\begin{align} a+2b+3c&\equiv 0\pmod 7,\\ 2a+3b+c&\equiv 4\pmod 7,\\ 3a+b+2c&\equiv 4\pmod 7 \end{align}\)
FInd the remainder when abc is divided by 7
I dunno how to do this question elimination didn't work at all
