Add 81/60 and 12/63
1st number: 1 21/60, 2nd number: 12/63
81/60 + 12/63 is 647/420.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 63 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 60 × 21 = 1260,
81/60 = 81 × 21/60 × 21 = 1701/1260 - Likewise, for the 2nd fraction, since 63 × 20 = 1260,
12/63 = 12 × 20/63 × 20 = 240/1260 - Add the two like fractions:
1701/1260 + 240/1260 = 1701 + 240/1260 = 1941/1260 - 1941/1260 simplified gives 647/420
- So, 81/60 + 12/63 = 647/420
In mixed form: 1227/420
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