A debt of $ 32= -32
and Saving of $100=+100
Why i have denoted debt by negative sign and savings by positive sign.
This can be the reason that integers came into existence.
Integers =[.....-100,....-90,.....-10,.....0,.....5,......50,......1000,...]
Debt means you have taken something from someone. Suppose you have taken $32 from your friend Glant and told him that after 6 months i will return you this money, he replied if i forget than you told him that i am writing this in my diary which i use everyday.Having learnt integers you have written a debt of $32 by
-32⇒Glant dated(23/9/2018)
Similarly you saved $100 in a month and kept in your saving box
and written in your diary as
+100⇒Saving in the month of January 2018.
Similarly we represent things which i possess by positive integers like number of garments i have (+25),amount of money in my saving bank account($10,256) and thing that 2000 people died due to a Desease, height of a tunnel, we represent it by negative sign i.e (-2,000),(-1188 cm).