Add 21/63 and 63/80
21/63 + 63/80 is 269/240.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 80 is 5040
Next, find the equivalent fraction of both fractional numbers with denominator 5040 - For the 1st fraction, since 63 × 80 = 5040,
21/63 = 21 × 80/63 × 80 = 1680/5040 - Likewise, for the 2nd fraction, since 80 × 63 = 5040,
63/80 = 63 × 63/80 × 63 = 3969/5040 - Add the two like fractions:
1680/5040 + 3969/5040 = 1680 + 3969/5040 = 5649/5040 - 5649/5040 simplified gives 269/240
- So, 21/63 + 63/80 = 269/240
In mixed form: 129/240
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