Add 9/12 and 72/15
1st number: 9/12, 2nd number: 4 12/15
9/12 + 72/15 is 111/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
9/12 = 9 × 5/12 × 5 = 45/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
72/15 = 72 × 4/15 × 4 = 288/60 - Add the two like fractions:
45/60 + 288/60 = 45 + 288/60 = 333/60 - 333/60 simplified gives 111/20
- So, 9/12 + 72/15 = 111/20
In mixed form: 511/20
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