Add 15/12 and 72/40
1st number: 1 3/12, 2nd number: 1 32/40
15/12 + 72/40 is 61/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 12 × 10 = 120,
15/12 = 15 × 10/12 × 10 = 150/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
72/40 = 72 × 3/40 × 3 = 216/120 - Add the two like fractions:
150/120 + 216/120 = 150 + 216/120 = 366/120 - 366/120 simplified gives 61/20
- So, 15/12 + 72/40 = 61/20
In mixed form: 31/20
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