The attachment shows reactions involved in a titration experiment. In the first equation, iodate reacts with iodide in acidic solution to produce iodine. In the second equation, the iodine is titrated with thiosulfate. I know the volume and molar concentration of iodate as well as the volume of thiosulfate as determined by the titration. I need to find the molar concentration of thiosulfate. I think I need to balance each equation separately by breaking them into oxidation/reduction reactions. I am then instructed to combine the balanced equations  and , in that order. Is this as simple as it sounds where I can just add them together, cancel out anything that appears on both sides of the equation, etc.? Why does order matter? Thanks for any help!