Add 81/45 and 20/63
1st number: 1 36/45, 2nd number: 20/63
81/45 + 20/63 is 667/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
81/45 = 81 × 7/45 × 7 = 567/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
20/63 = 20 × 5/63 × 5 = 100/315 - Add the two like fractions:
567/315 + 100/315 = 567 + 100/315 = 667/315 - So, 81/45 + 20/63 = 667/315
In mixed form: 237/315
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