Add 3/40 and 21/14
1st number: 3/40, 2nd number: 1 7/14
3/40 + 21/14 is 63/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 14 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
3/40 = 3 × 7/40 × 7 = 21/280 - Likewise, for the 2nd fraction, since 14 × 20 = 280,
21/14 = 21 × 20/14 × 20 = 420/280 - Add the two like fractions:
21/280 + 420/280 = 21 + 420/280 = 441/280 - 441/280 simplified gives 63/40
- So, 3/40 + 21/14 = 63/40
In mixed form: 123/40
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