Makes about as much sense as this old gem:
Given: a = b
Therefore: aa = ab
And thusly: a² = a*b
Similarly: a²-b² = a*b - b²
Factoring: (a+b)(a-b) = b(a-b)
Reducing: (a+b) = b
Substituting: (b+b) = b
Reducing: 2b = b
Thusly: 2 = 1
Makes about as much sense as this old gem:
Given: a = b
Therefore: a*a = a*b
And thusly: a² = a*b
Similarly: a²-b² = a*b - b²
Factoring: (a+b)*(a-b) = b*(a-b)
Reducing: (a+b) = b
Substituting: (b+b) = b
Reducing: 2b = b
Thusly: 2 = 1