The probability of guessing the correct answer to certain question is x/2. If the probability of not guessing the correct answer is 2/3, then find the value of x.
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x/2 + 2x/3 = 1
3x+4x/6 =1
7x = 1*6
x= 6/7
3x+4x/6 =1
7x = 1*6
x= 6/7
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