I am having hard time to understand why a-b = -(b-a)


291
views
0
14 months ago by

I just memorize it but I don't quite understand why.

2 Answers


2
14 months ago by

 Using the the distributive property,

$-\left(b-a\right)=-1\times\left(b-a\right)=-b+a=a-b$(ba)=1×(ba)=b+a=ab 

0
14 months ago by

Intuitively speaking, a-b is the difference between a and b. Whereas b-a is the difference between b and a. They are just opposite of each other and therefore the minus sign.

Please login to add an answer/comment or follow this question.

Similar posts:
Search »