Add 81/80 and 20/4
1st number: 1 1/80, 2nd number: 5 0/4
81/80 + 20/4 is 481/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 4 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
81/80 = 81 × 1/80 × 1 = 81/80 - Likewise, for the 2nd fraction, since 4 × 20 = 80,
20/4 = 20 × 20/4 × 20 = 400/80 - Add the two like fractions:
81/80 + 400/80 = 81 + 400/80 = 481/80 - So, 81/80 + 20/4 = 481/80
In mixed form: 61/80
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