Commutative Law

Commutative Law

The Commutative laws which means we can swap numbers over and still get the same answer when we add or multiply.

1. a + b = b + a
2. a * b = b * a

Examples : 

1. 3 + 4 = 7
now, lets swap
  4 + 3 = 7
even if we swap we are getting same answer 7.
 
2. 3 * 4 = 12
    4 * 3 = 12
 
3. 8 * 53 * (-125)
   = 424 * (-125)
   = -53,000
lets swap
   53 * (8*(-125))
 = 53 * (-1000)
 = -53,000
even if we swap we are getting same answer -53,000

NOTE :
 - *- = + 
 + * + = +
 + * - = -
 - *+ = -

4. 15 * (-25) * (-4) * (-10)
   = [15 * (-25) * (-4) ] * (-10)
   = 1500 * (-10)
   = -15,000 
lets swap
15 * (-25) * (-4) * (-10)
   =  (-25) * [15 * (-4)  * (-10)]
   =  -25 * 600
   = -15,000