Add 81/40 and 72/35
1st number: 2 1/40, 2nd number: 2 2/35
81/40 + 72/35 is 1143/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 35 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
81/40 = 81 × 7/40 × 7 = 567/280 - Likewise, for the 2nd fraction, since 35 × 8 = 280,
72/35 = 72 × 8/35 × 8 = 576/280 - Add the two like fractions:
567/280 + 576/280 = 567 + 576/280 = 1143/280 - So, 81/40 + 72/35 = 1143/280
In mixed form: 423/280
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