$$\(A B C\)$$ is a triangle. $$\(D\)$$ and $$\(E\)$$ are points such that $$\(A C D\)$$ and $$\(B C E\)$$ are straight lines. reflex angle $$\(A B C=298^{\circ}\)$$ angle $$\(E C D=97^{\circ}\)$$ Work out the size of angle $$\(x\)$$. Give a reason for each stage of your working. $$\(x=\)$$ $$\(\circ\)$$

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