Add 21/10 and 7/5
1st number: 2 1/10, 2nd number: 1 2/5
21/10 + 7/5 is 7/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 5 is 10
Next, find the equivalent fraction of both fractional numbers with denominator 10 - For the 1st fraction, since 10 × 1 = 10,
21/10 = 21 × 1/10 × 1 = 21/10 - Likewise, for the 2nd fraction, since 5 × 2 = 10,
7/5 = 7 × 2/5 × 2 = 14/10 - Add the two like fractions:
21/10 + 14/10 = 21 + 14/10 = 35/10 - 35/10 simplified gives 7/2
- So, 21/10 + 7/5 = 7/2
In mixed form: 31/2
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