Add 81/21 and 24/63
1st number: 3 18/21, 2nd number: 24/63
81/21 + 24/63 is 89/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
81/21 = 81 × 3/21 × 3 = 243/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
24/63 = 24 × 1/63 × 1 = 24/63 - Add the two like fractions:
243/63 + 24/63 = 243 + 24/63 = 267/63 - 267/63 simplified gives 89/21
- So, 81/21 + 24/63 = 89/21
In mixed form: 45/21
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