That depends what kind of calculation you want to do with the fractions.
If you are adding or subtracting unlike fractions, convert them to equivalent fractions with a common denominator.
Like fractions are the fractions which have the same denominator and unlike fractions are the fractions which do not have the same denominator.
Like fractions have the same denominator, unlike fractions don't.
"Unlike" fractions.
You look for a common denominator; convert the fractions to equivalent fractions with the denominator you found; then you do the addition itself.
If the denominators are not the same, then you have to use equivalent fractions which do have a common denominator . To do this, you need to find the least common multiple (LCM) of the two denominators. To add fractions with unlike denominators, rename the fractions with a common denominator. Then add and simplify.
no, to add and subtract like and unlike fractions the denominator has to be the same,
You first convert them to equivalent fractions with a common denominator. Or you convert them to decimal fractions.
If the denominators are not the same, then you have to use equivalent fractions which do have a common denominator . To do this, you need to find the least common multiple (LCM) of the two denominators. To add fractions with unlike denominators, rename the fractions with a common denominator. Then add and simplify.
Because that is not how addition of fractions is defined.
You basically have to learn separately how to do different things with fractions, including finding a common denominator; converting fractions to a different denominator; simplifying fractions; adding and subtracting fractions; multiplying fractions; dividing fractions.
If the denominators are not the same, then you have to use equivalent fractions which do have a common denominator . To do this, you need to find the least common multiple (LCM) of the two denominators. To add fractions with unlike denominators, rename the fractions with a common denominator.