I. Firstly count the number of atoms of each element on both side of the arrow.
II. Only balance one element at a time.
III. Multiply the symbol or formula with suitable integers (2,3,4,5 etc) on that side of equation where the number of atom of a particular element is less and try to balance this element on both sides of equation.
IV. Starts multiply with smaller number.
V. Repeat the process for all the elements one by one.
VI. Balance the diatomic molecules like 2 , 2 ,2 at the end