QUESTION $2$

Given the following system $of$ linear equations

$([1,2,3],[4,5,6],[2,7,12])([x],[y],[z])=([6],[24],[12]),$ where $A=([1,2,3],[4,5,6],[2,7,12]).$

$aA.$ Hence, what your conclusion $of$ the solution for the system?

$(4$ marks$)$

$b$