Add 81/12 and 15/45
1st number: 6 9/12, 2nd number: 15/45
81/12 + 15/45 is 85/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
81/12 = 81 × 15/12 × 15 = 1215/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
15/45 = 15 × 4/45 × 4 = 60/180 - Add the two like fractions:
1215/180 + 60/180 = 1215 + 60/180 = 1275/180 - 1275/180 simplified gives 85/12
- So, 81/12 + 15/45 = 85/12
In mixed form: 71/12
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