If a + b + c = -3, a+3b+c = 9, a+b+3c = -19, then find abc.
i am assuming you mean find a*b*c
\(2b=12\) from the first two statements
\(b=6\)
\(2c=-16\)from the first and third statement
\(c=-8\)
\(a=-1\)
\(a*b*c=48\)
