Add 15/10 and 81/30
1st number: 1 5/10, 2nd number: 2 21/30
15/10 + 81/30 is 21/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 10 × 3 = 30,
15/10 = 15 × 3/10 × 3 = 45/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
81/30 = 81 × 1/30 × 1 = 81/30 - Add the two like fractions:
45/30 + 81/30 = 45 + 81/30 = 126/30 - 126/30 simplified gives 21/5
- So, 15/10 + 81/30 = 21/5
In mixed form: 41/5
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