Add 21/10 and 28/16
1st number: 2 1/10, 2nd number: 1 12/16
21/10 + 28/16 is 77/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 10 × 8 = 80,
21/10 = 21 × 8/10 × 8 = 168/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
28/16 = 28 × 5/16 × 5 = 140/80 - Add the two like fractions:
168/80 + 140/80 = 168 + 140/80 = 308/80 - 308/80 simplified gives 77/20
- So, 21/10 + 28/16 = 77/20
In mixed form: 317/20
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