It doesn't appear that the original problem is restricted to the set of real numbers. Well, when you break beyond normal algebra, you will find out that dividing by zero really gives you an infinite number. Therefore, it would still be possible to figure the results. However, since you have placed numbers beside a+b that would give it more than one response and you have stated that a=1=b which can only have one response, there appears to be a misdirection with your conclusion. Ergo, "INCORRECT".
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