Add 81/10 and 21/90
1st number: 8 1/10, 2nd number: 21/90
81/10 + 21/90 is 25/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
81/10 = 81 × 9/10 × 9 = 729/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
21/90 = 21 × 1/90 × 1 = 21/90 - Add the two like fractions:
729/90 + 21/90 = 729 + 21/90 = 750/90 - 750/90 simplified gives 25/3
- So, 81/10 + 21/90 = 25/3
In mixed form: 81/3
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