Subtracting chemical equation

Question

C + O₂ gives CO₂

CO + 1/2 O₂ gives CO₂

Subtract these 2 equations and explain in a detailed.

Answer 1

C + O₂ → CO₂ — (i)

CO + \(\frac{1}{2}\) O₂ → CO₂ — (ii)

On substracting these to equation we get

C + \(\frac{1}{2}\)O₂ → CO