Add 21/40 and 21/10
1st number: 21/40, 2nd number: 2 1/10
21/40 + 21/10 is 21/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 10 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
21/40 = 21 × 1/40 × 1 = 21/40 - Likewise, for the 2nd fraction, since 10 × 4 = 40,
21/10 = 21 × 4/10 × 4 = 84/40 - Add the two like fractions:
21/40 + 84/40 = 21 + 84/40 = 105/40 - 105/40 simplified gives 21/8
- So, 21/40 + 21/10 = 21/8
In mixed form: 25/8
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