If $(\alpha, \beta, \gamma)$ is the solution of the system of simultaneous linear equations given by $3 x+4…
If $(\alpha, \beta, \gamma)$ is the solution of the system of simultaneous linear equations given by $3 x+4 y-5 z=-6,2 x+3 y-4 z+7=0,4 x-2 y+z=9$ then $\alpha+3 \beta-2 \gamma=$