Add 5/42 and 81/40
1st number: 5/42, 2nd number: 2 1/40
5/42 + 81/40 is 1801/840.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 42 × 20 = 840,
5/42 = 5 × 20/42 × 20 = 100/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
81/40 = 81 × 21/40 × 21 = 1701/840 - Add the two like fractions:
100/840 + 1701/840 = 100 + 1701/840 = 1801/840 - So, 5/42 + 81/40 = 1801/840
In mixed form: 2121/840
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