Answer and Step-by-step explanation:
a - b = 2
=
b = a - 2
a = b + 2
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b = b + 2 - 2
b = b
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______________
a = a - 2 + 2
a = a
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If a equals 0, then the expression is undefined.
If b = 0, then the expression is 0.
There are infinite number of solutions when a is not 0 and the numbers are positive.
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