Add 1/10 and 20/21
1/10 + 20/21 is 221/210.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
1/10 = 1 × 21/10 × 21 = 21/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
20/21 = 20 × 10/21 × 10 = 200/210 - Add the two like fractions:
21/210 + 200/210 = 21 + 200/210 = 221/210 - So, 1/10 + 20/21 = 221/210
In mixed form: 111/210
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