Add 81/30 and 7/10
1st number: 2 21/30, 2nd number: 7/10
81/30 + 7/10 is 17/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 10 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 30 × 1 = 30,
81/30 = 81 × 1/30 × 1 = 81/30 - Likewise, for the 2nd fraction, since 10 × 3 = 30,
7/10 = 7 × 3/10 × 3 = 21/30 - Add the two like fractions:
81/30 + 21/30 = 81 + 21/30 = 102/30 - 102/30 simplified gives 17/5
- So, 81/30 + 7/10 = 17/5
In mixed form: 32/5
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