Add 81/7 and 20/63
1st number: 11 4/7, 2nd number: 20/63
81/7 + 20/63 is 107/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 7 × 9 = 63,
81/7 = 81 × 9/7 × 9 = 729/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
20/63 = 20 × 1/63 × 1 = 20/63 - Add the two like fractions:
729/63 + 20/63 = 729 + 20/63 = 749/63 - 749/63 simplified gives 107/9
- So, 81/7 + 20/63 = 107/9
In mixed form: 118/9
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