ghiku you are wright ... but in video ... if you made the execise in letters ... then is correct ... and a+b=b ... BUT ... if you put numbers instead of letters like a=1 and b=1 ... the yea ghiku ... you are wrigth (sry my bad english)

hahahaaa ce natarau!!nici macar nu e adevarat :2=1

Very wrong because you divided the terms by zero because (a-b) = 0 so you can not divided by it ......

there is a faul
watch the video on 1:17 and this is the wrong. cause we can't eliminate a-b cauce it's equal 0 . and sorry for my english

Ohh man das mal sowas von absulut falsch berechnet

true! very wrong!

think u have 3 on maths

this is rong

if like tat,it no amazing already~~~just lie ppl~~

.... ghiku is telling the truth

this trick doesn't prove that 2=1, why ? cause it's wrong a-b=1-1= 0, hence (a+b)(a-b)=b(a-b) <=> 2*0=1*0 <=> 0=0... this is the secret ;) and even if you go for the dividing... by maths law u can't divide by a-b, cause a-b=0...