Find the Cartesian form of the parametric equations: $x=2\sin^2(\theta)$, $y=7\cos^2(\theta)$

Question

I am trying to find the cartesian form of the parametric expressions $x=2\sin^2(\theta)$, $y=7\cos^2(\theta)$. I have $x=2-cos^2(\theta)$ but i can't work it after that.

Answer 1

$$sin^2(\theta)+cos^2(\theta)=1$$ $$\frac{x}{2}+\frac{y}{7}=1$$