Add 28/20 and 81/16
1st number: 1 8/20, 2nd number: 5 1/16
28/20 + 81/16 is 517/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 20 × 4 = 80,
28/20 = 28 × 4/20 × 4 = 112/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
81/16 = 81 × 5/16 × 5 = 405/80 - Add the two like fractions:
112/80 + 405/80 = 112 + 405/80 = 517/80 - So, 28/20 + 81/16 = 517/80
In mixed form: 637/80
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