Add 81/21 and 15/16
1st number: 3 18/21, 2nd number: 15/16
81/21 + 15/16 is 537/112.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 16 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 21 × 16 = 336,
81/21 = 81 × 16/21 × 16 = 1296/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
15/16 = 15 × 21/16 × 21 = 315/336 - Add the two like fractions:
1296/336 + 315/336 = 1296 + 315/336 = 1611/336 - 1611/336 simplified gives 537/112
- So, 81/21 + 15/16 = 537/112
In mixed form: 489/112
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