Add 81/15 and 20/12
1st number: 5 6/15, 2nd number: 1 8/12
81/15 + 20/12 is 106/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 12 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 12 × 5 = 60,
20/12 = 20 × 5/12 × 5 = 100/60 - Add the two like fractions:
324/60 + 100/60 = 324 + 100/60 = 424/60 - 424/60 simplified gives 106/15
- So, 81/15 + 20/12 = 106/15
In mixed form: 71/15
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