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Math Equation Riddle

Math Equation Riddle Solution - 9 May

Find the mistake in the below maths equations

A = 2
A(A-1) = 2(A-1)
A2-A = 2A-2
A2-2A = A-2
A(A-2) = A-2
A = 1

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Solution

After  A(A-2)=A-2 ,  next step should be  A(A-2)-A+2=0
And then  A^2-3A+2=0


now solve this equation A , answer will be 1 and 2