Thursday

July 24, 2014

July 24, 2014

Posted by **Devan** on Monday, September 27, 2010 at 1:07pm.

A. Closure property

B. Associative property

C. commutative property

D. identity property

- Math -
**bobpursley**, Monday, September 27, 2010 at 2:20pmThere is clearly no associative nor communative property of subtraction

a-(B-c)clearly does not equal (a-b)-c

nor does

a-b=b-a

The closure property: Depends on the set you are defining, for instance, subtraction of real numbers, example 5-7=-2 is closed, as 5, 7, and -2 are all real numbers. However, if the set is defined as natural numbers, then -2 is NOT a natural number, so the property of closure of subtraction of natural numbers does not exist. So this property may or may not hold, it depends on set definition.

So now, identity propery. The identity property for addition is that if you add zero to any number, the number is unchanged. The subtraction identity is that if you subtract zero from any number, it is unchanged.

**Related Questions**

Algebra - 55. Find the range of y = 2x + 1. a. all real numbers b. all positive ...

Algebra - 55. Find the range of y = 2x + 1. a. all real numbers b. all positive ...

Algebra - 55. Find the range of y = 2x + 1. a. all real numbers b. all positive ...

Algebra - 55. Find the range of y = 2x + 1. a. all real numbers b. all positive ...

maths - Match them- a (a-b) is a rational number 1) distributive property b) a+0...

Math-- - Identify the property or theorem which justifies the statement. 7 × 3 ...

Math - I just need a description of the following: Associative property of ...

Math - I just need a description of the following: Associative property of ...

Pre-Algebra: HELP PLEASE - I'm really bad at these, can someone help me PLEASE? ...

math - if you simplify the expression 3x+4(x-2)-3x into the expression 3x+ 4x -8...