Subtraction is taught to children when they are of age group 4 - 5. After learning counting we focus on addition and subtraction which are among the four basic operations of the math. Subtraction basically means removing group of objects/things from a collection. It is the difference between the two numbers.
There are 5 mangoes in a basket and a girl removed 2 mangoes from it. What is the remaining number of mangoes in the basket?
5 – 2 = 3
The subtraction process in the case of complex Numbers is explained below: