Add 81/80 and 4/90
1st number: 1 1/80, 2nd number: 4/90
81/80 + 4/90 is 761/720.
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,
4/90 = 4 × 8/90 × 8 = 32/720 - Add the two like fractions:
729/720 + 32/720 = 729 + 32/720 = 761/720 - So, 81/80 + 4/90 = 761/720
In mixed form: 141/720
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