Add 63/21 and 18/80
1st number: 3 0/21, 2nd number: 18/80
63/21 + 18/80 is 129/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 21 × 80 = 1680,
63/21 = 63 × 80/21 × 80 = 5040/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
18/80 = 18 × 21/80 × 21 = 378/1680 - Add the two like fractions:
5040/1680 + 378/1680 = 5040 + 378/1680 = 5418/1680 - 5418/1680 simplified gives 129/40
- So, 63/21 + 18/80 = 129/40
In mixed form: 39/40
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