Add 81/80 and 2/90
1st number: 1 1/80, 2nd number: 2/90
81/80 + 2/90 is 149/144.
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,
2/90 = 2 × 8/90 × 8 = 16/720 - Add the two like fractions:
729/720 + 16/720 = 729 + 16/720 = 745/720 - 745/720 simplified gives 149/144
- So, 81/80 + 2/90 = 149/144
In mixed form: 15/144
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