Add 20/10 and 27/21
1st number: 2 0/10, 2nd number: 1 6/21
20/10 + 27/21 is 23/7.
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,
20/10 = 20 × 21/10 × 21 = 420/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
27/21 = 27 × 10/21 × 10 = 270/210 - Add the two like fractions:
420/210 + 270/210 = 420 + 270/210 = 690/210 - 690/210 simplified gives 23/7
- So, 20/10 + 27/21 = 23/7
In mixed form: 32/7
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