Add 81/80 and 1/90
1st number: 1 1/80, 2nd number: 1/90
81/80 + 1/90 is 737/720.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
81/80 = 81 × 9/80 × 9 = 729/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
1/90 = 1 × 8/90 × 8 = 8/720 - Add the two like fractions:
729/720 + 8/720 = 729 + 8/720 = 737/720 - So, 81/80 + 1/90 = 737/720
In mixed form: 117/720
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