Operations and Equal Sign

I. Operations

In mathematics, an operation is a calculation (process) from input values (called "operands") to an output value.

Types of operation
There are two common types of operations: unary and binary. Unary operations involve only one input value, such as negation and absolute value. Binary operations, on the other hand, involve two input values and include addition, subtraction, multiplication, division, and exponentiation.

Operations can involve mathematical objects other than numbers. For instance logical values true and false can be combined using logic operations, such as "and", "or", and "not".

An operation may or may not have certain properties, for example it may be associative, commutative, anticommutative, idempotent, and so on.

The values combined are called operands, arguments, or inputs, and the value produced is called the value, result, or output. Operations can have fewer or more than two inputs.


Basic Arithmetic Operations
The four basic arithmetic operations are addition, subtraction, multiplication and division.

II. Equal Sign

The equal sign is represented as = . We use this symbol to show when two or more quantities are exactly the same.

Wikipedia: Operation (mathematics)