Answer
$5x-y-z=7$
Work Step by Step
The general form of the equation of the plane is:
$a(x-x_0)+b(y-y_0)+c(z-z_0)=0$
or, $ax+by+cz=ax_0+by_0+cz_0$
Plugging in the given values, we get
$5x-1y-1z=5(1)-1(-1)-1(-1)$
After simplification, we get
$5x-y-z=7$
