Add 2/5 and 21/16
1st number: 2/5, 2nd number: 1 5/16
2/5 + 21/16 is 137/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 5 × 16 = 80,
2/5 = 2 × 16/5 × 16 = 32/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
21/16 = 21 × 5/16 × 5 = 105/80 - Add the two like fractions:
32/80 + 105/80 = 32 + 105/80 = 137/80 - So, 2/5 + 21/16 = 137/80
In mixed form: 157/80
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