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What must a fraction have before we add before we can add them?
They must have the same denominators.
How to add mixed fractions?
you can't add nor subtract mixed fractions so you need to turn it into a fraction, if you wanna turn a mixed fraction into a fraction you need to multiply the whole number by the denominator, then add the numerator, then you can multiply normally (make sure you simplify and turn it into a mixed fraction your answer)
What fraction is 15 minutes of a hour?
It is 15/60, which can be simplified, but probably best to see if you need to add or subtract other fractions of an hour before simplifying.
How do you add a negative fraction to a mixed fraction?
To add a negative fraction to a mixed fraction, first convert the mixed fraction to an improper fraction. Then, find a common denominator for both fractions. Next, add the numerators and keep the common denominator. Finally, simplify the resulting fraction if needed. If the negative fraction has a smaller absolute value than the mixed fraction, you may need to borrow or regroup to ensure proper subtraction.
How do you add and subtract fractions in math?
You need common denominators. Then add or subtract the numerators. If the answer is an improper fraction it is common practice to reduce it to a mixed number.
