STEP ONE: Get a common denominator.
STEP TWO: Add or subtract the numerators.
STEP THREE: Simplify the result if needed. Notice that 3/27 can be simplified, since the numerator and denominator are both divisible by 3.
And that's all there is to it! Final Answer:
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Choose a denominator which is a multiple of the two dissimilar denominators. Divide each of the original denominators into the new and multiple each result by each numerator.
e.g.
2/3 + 5/6 The new denominator could be 12 (multiple of 3 and 6).
3 into 12 goes 4. So we have 2 x 4 = 8
Which gives 8/12
And 6 into 12 goes 2. So we have 5 x 2 = 10
Which gives 10/12
Thus 2/3 + 5/6 becomes 8/12 + 10/12 = 18/12 = 1 and 6/12 = 1 1/2 (One and a half)
no, to add and subtract like and unlike fractions the denominator has to be the same,
convert at least one of them so that they have the same denominator, then proceed with the addition or subtraction
Before you can add or subtract, both fractions must have the same denominator, andmaking that change without changing the value of either fraction is your job. The bestchoice for a 'common' denominator is usually the least common multiple of the originaldenominators.
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.
he fact that they are improper is irrelevant. Re-scale the fractions so that they have the same denominator and thenadd or subtract as required.