1.
Consider the following system of equations:
x+2y−3z=a2x+6y−11z=bx−2y+7z=c\begin{aligned} x + 2y - 3z &= a \\ 2x + 6y - 11z &= b \\ x - 2y + 7z &= c \end{aligned}

where aa, bb and cc are real constants. Then the system of equations:
Matrices and Determinants - Medium - Question