If, a=b

Then,

a^2=ab

=>a^2-b^2=a^2-ab

=>(a+b)(a-b)=a(a-b)

=>a+b=a

=>a+a=a

=>2a=a

=>2=1

I know there is a mistake in this calculation. What's that and please give me a logic behind that mistake.

## Hey! There is a 'JHAMELA'

- samiul_samin
**Posts:**1004**Joined:**Sat Dec 09, 2017 1:32 pm