solve the equation!

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by Geva@EconomistGMAT » Mon Aug 22, 2011 11:53 pm
marmar29 wrote:the answer of 6n-4n=4n is
a)0
b)1
c)2
d)3
e)4
im stuck !
pls help
thanks!
Not that you're likely to see anything like this on the test, but don't let a weird equation psyche you out. Do what you always do: isolate the ns on one side using the basic operators of addition, subtraction, multiplication, division on both sides of the equation.

6n-4n=4n /-4n (to move the 4n from the right to the left)
6n-4n-4n = 4n-4n
-2n=0 /:-2
n=0
Answer is A.
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