I am studying to take a math placement test and I am going over the practice questions. I have not done math in about 6 years and I do not remember any of it.
first step is to find the least common denominator, in this case, it's 12
so 6/12 + 8/12 - 9/12 = (6+8-9)/12=5/12
If you have any questions let me know
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