Finding implicit derivative $\frac{∂z}{∂x}$ in multivariable equation

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I am pretty new to multivariable calculus, I know how to find $f_x$, $f_{xx}$, $f_{xy}$ etc. but that's about all.

I want to solve this question:

Find the value of $\frac{∂z}{∂x}$ at the point (1, 1, 1) if the equation $2xy + z^3x − yz = 2$ defines $z$ as a function of the two independent variables $x$ and $y$.

Edit:

Thanks to all the comments, I went ahead and tried to answer the question. $$2xy + z^3x − yz = 2$$

$$2y+z^3+3z^2x\frac{∂z}{∂x}-y\frac{∂z}{∂x}=0$$

$$\frac{∂z}{∂x}(3z^2x-y)=-2y-z^3$$

$$\frac{∂z}{∂x}=\frac{-2y-z^3}{3z^2x-y}$$

at $(1, 1, 1)$:

$$\frac{∂z}{∂x}=\frac{-2(1)-(1)^3}{3(1)^2(1)-(1)}=-\frac{3}{2}$$

Is this correct?

Thanks!