Review question

# Can we solve these equations in $x, y, z, a$ and $b$? Add to your resource collection Remove from your resource collection Add notes to this resource View your notes for this resource

Ref: R6155

## Question

Solve for $x$, $y$ and $z$ the equations: \begin{align*} 2x-y+z&{}=0,\\ 3y+z&{}=0,\\ x+y+az&{}=b, \end{align*}

where $a$ and $b$ are constants and $a \neq 1$.

What happens if $a=1$?