Add 81/21 and 5/10
1st number: 3 18/21, 2nd number: 5/10
81/21 + 5/10 is 61/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
81/21 = 81 × 10/21 × 10 = 810/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
5/10 = 5 × 21/10 × 21 = 105/210 - Add the two like fractions:
810/210 + 105/210 = 810 + 105/210 = 915/210 - 915/210 simplified gives 61/14
- So, 81/21 + 5/10 = 61/14
In mixed form: 45/14
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