Additive indentity

n = 1
a variable is always a number itself remember 7+n
5+2 = 7
79/100 is the same thing as 79%
Step-by-step explanation:
it may help you to understand
Oh I get this.
So what you have to do is leave the same denominator and just count. Once a fraction has the same numerator and denominator that means it is a whole number.