Add 81/20 and 18/35
1st number: 4 1/20, 2nd number: 18/35
81/20 + 18/35 is 639/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 35 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
81/20 = 81 × 7/20 × 7 = 567/140 - Likewise, for the 2nd fraction, since 35 × 4 = 140,
18/35 = 18 × 4/35 × 4 = 72/140 - Add the two like fractions:
567/140 + 72/140 = 567 + 72/140 = 639/140 - So, 81/20 + 18/35 = 639/140
In mixed form: 479/140
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