Can some one explain how to make a balanced eqation

to make a balanced equation we need to write

Count the atoms of each element in the reactants and the products.

Use coefficients; place them in front of the compounds as needed.

a) the particles of the chair are strongly held together.

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.