Question 342633
4n+6-2n= 2(n+3) 
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2n + 6 = 2n + 6
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If you subtract 2n from both sides you get:
6 = 6
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That is always true.
It tells you that the original equation is an identity.
It is true for all possible values of "n".
So the equation has an infinite number of solutions.
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Cheers,
Stan H.