Add 72/80 and 21/16
1st number: 72/80, 2nd number: 1 5/16
72/80 + 21/16 is 177/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
72/80 = 72 × 1/80 × 1 = 72/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
21/16 = 21 × 5/16 × 5 = 105/80 - Add the two like fractions:
72/80 + 105/80 = 72 + 105/80 = 177/80 - So, 72/80 + 21/16 = 177/80
In mixed form: 217/80
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