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.
-firstly eliminate the SO₄^-2
-next eliminate the two Na⁺ ions

Step 4 Check that the ionic equation is balanced for charge and atoms of each element..