Step1 Write the overall equation using the right formula for each reactant and product
Step 2 Separate the aqueous compounds into their component ions with the number of each ion shown.
Step 3 Eliminate the ions shown on both sides of the equation, the spectator ions.
-firstly eliminate the six NH4+ ions
-next eliminate the three SO4-2 ions
Step 4 Check that the ionic equation is balanced for charge and atoms of each element.
