How Do I Solve If 3x = 81 What Is The Value Of X?


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Anonymous answered
I have also come across this question in a defence force aptitude test
although the original question appeared as follows
If 3x = 81, what is the value of x with the 'x' being a power
the answer is d) 4 because 3x3x3x3= 81

my best advice is to use trial and error in that use each of the possible answers as a substitute for 'x' until you find the correct one

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