Add 10/21 and 63/81
10/21 + 63/81 is 79/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 81 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 21 × 27 = 567,
10/21 = 10 × 27/21 × 27 = 270/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
63/81 = 63 × 7/81 × 7 = 441/567 - Add the two like fractions:
270/567 + 441/567 = 270 + 441/567 = 711/567 - 711/567 simplified gives 79/63
- So, 10/21 + 63/81 = 79/63
In mixed form: 116/63
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