Add 81/12 and 72/45
1st number: 6 9/12, 2nd number: 1 27/45
81/12 + 72/45 is 167/20.
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,
72/45 = 72 × 4/45 × 4 = 288/180 - Add the two like fractions:
1215/180 + 288/180 = 1215 + 288/180 = 1503/180 - 1503/180 simplified gives 167/20
- So, 81/12 + 72/45 = 167/20
In mixed form: 87/20
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