Add 81/15 and 30/20
1st number: 5 6/15, 2nd number: 1 10/20
81/15 + 30/20 is 69/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
81/15 = 81 × 4/15 × 4 = 324/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
30/20 = 30 × 3/20 × 3 = 90/60 - Add the two like fractions:
324/60 + 90/60 = 324 + 90/60 = 414/60 - 414/60 simplified gives 69/10
- So, 81/15 + 30/20 = 69/10
In mixed form: 69/10
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