In fractions, you can NEVER add or subtract
Change them to like fractions and proceed.
no, to add and subtract like and unlike fractions the denominator has to be the same,
Because you can't add or subtract fractions that have different denominators. Making them like fractions, by multiplying so the denominators are the same, you can add and/or subtract them.
just find a common denominator and add like you regularly would with fractions.
Adding like terms can be like adding fractions. You can only add fractions with a common denomonator. You can only combine terms together if they are like. Think of like terms as denomonators. You can only add if they are like.
because its just one of the rules of math :)
it stay the same when you subtract fractions and when you add 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.
You can add or subtract fractions only if they are "like" fractions, that is, only if they have the same denominator - unless you know your fractions really well.
When adding like fractions, only the numerators are added.
Fractions! Otherwise you don't have anything to add.
Change them into mixed numbers and add the integers and fractions together ensuring that the fractions have a common denominator.
They are called like fractions.In order to add or subtract fractions you will usually need to convert them to like fractions. Then you simply add or subtract the numerators (as required) to form the numerator of the answer. The same (or common) denominator is the denominator of the answer. You may need to simplify the resulting fraction.
The sum, just like regular adding.
No, the denominators have to be the same.
add by adding
You need a common denominator in order to add or subtract fractions.
If the fractions have the same denominator, add and subtract the numerators as if the denominators weren't there and put the result over that denominator. Reduce if possible. If the fractions have different denominators, find the LCM of the denominators and convert the fractions to equivalent fractions with like denominators. Then add and subtract the numerators as if the denominators weren't there and put the result over that denominator. Reduce if possible.
Because think of like fractions as the same things.. you can subtract halves from halves for example, but what does it mean to take away a half from a third?By converting them into like fractions, we can add or subtract them easily.
with a calculator
They add to the denominator!