How much is 25 plus 7?

Definition

What is?
Addition is a fundamental operation in mathematics that involves combining two or more numbers or quantities to find their total or sum. The numbers being added are called "addends" and the result is called the "sum".

Elements
The elements of the sum are known:

• Operation: 25 + 7;
• 1st installment (to the operator's left): 25;
• 2nd installment: 7;
• operator: +;
• sum: 32.

Properties
The sum operation has important properties

• Commutativity
  In mathematics, the commutative property of addition states that changing the order of the numbers being added does not change the result.
  25 + 7 = 7 + 25 = 32.
• Associativity
  In mathematics, the associative property states that when you add three or more numbers together, the grouping of the numbers does not matter. This means that the sum of three or more numbers is always the same, regardless of the order in which you group them.
  ( 10 + 10 ) + 1 = 21
  10 + ( 10 + 1 ) = 21.
• Distributivity
  In mathematics, the distributivity property states that when you multiply a number by the sum of two or more other numbers, you can distribute the multiplication across the sum and simplify. This property also holds true for addition, meaning that the sum of two or more numbers can be distributed across another sum.
  1 x ( 10 + 10 ) = 1 x 10 + 1 x 10 = 20
• Neutral element
  The neutral element of addition is zero, which means that adding zero to any number does not change its value.
  25 + 0 = 25;
  7 + 0 = 7.
• Closure
  Addition is closed in the set of real numbers, meaning that adding any two real numbers will always give another real number.
  25 is a real number;
  7 is a real number;
  32 is a real number.