SOLUTION: a negative fraction is what I need help with. the question is 2/3+(-1/4). I got 1/12. I added 2 to -1 and got 1. Then the common denominatior is 12, right? The back of my mathbook

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: a negative fraction is what I need help with. the question is 2/3+(-1/4). I got 1/12. I added 2 to -1 and got 1. Then the common denominatior is 12, right? The back of my mathbook       Log On


   

Question 342974: a negative fraction is what I need help with. the question is 2/3+(-1/4). I got 1/12. I added 2 to -1 and got 1. Then the common denominatior is 12, right? The back of my mathbook says the answer is 5/12. I am confused.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
You need to get a common denominator before you can add/subtract the numerators.
%282%2F3%29%284%2F4%29=8%2F12
-%281%2F4%29%283%2F3%29=-%283%2F12%29
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%282%2F3%29%2B%28-1%2F4%29=8%2F12%2B%28-3%2F12%29
%282%2F3%29%2B%28-1%2F4%29=%288-3%29%2F12%29
%282%2F3%29%2B%28-1%2F4%29=highlight%285%2F12%29%29