So Let's adjust the condition! So to ken how to compose what number of components are on each of the sides from this condition. The coefficient has to require the apply that the entire aggravate that is denotes we have to decide what number of is on the reactants side so: Na=2 , O=6, N=2 So there is a subscript of 3, so we can now surmise that we can duplicate 2*3=6. So the final answer shall be 2.