Assuming that these "like" fractions have common denominators, to add or subtract them, simply add or subtract their numerators (numbers on top of the fraction), then put that answer over the like denominator.
Example: 5/7 + 1/7 = 6/7
Example: 3/8 - 2/8 = 1/8
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no, to add and subtract like and unlike fractions the denominator has to be the same,
In fractions, you can NEVER add or subtract
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.
Make the fractions equivalent then subtract
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.