Let us continue our math lesson to understand Solar Energy

Let us begin with algebra.

a+b=c

a-b=c
 say a = 2   ,  b = 1  then ,
2 + 1 = 3   2 - 1 = 1

This is an example of math, addition and substraction.
Let us continue. 

ab, a(b) = ' a' multiplied by 'b'

Let us continue.

a/b = 'a' divided by 'b'

8/2= 4

Let us continue

a/b = c/d    whenever ad = bc
 Example: a = 5 , b = 7 , c = 15 , d = 21
5/7 = 15/21        5x21 = 7x15   =  105 proof




~Bill ;)~