Add 20/12 and 42/15
1st number: 1 8/12, 2nd number: 2 12/15
20/12 + 42/15 is 67/15.
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,
20/12 = 20 × 5/12 × 5 = 100/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
42/15 = 42 × 4/15 × 4 = 168/60 - Add the two like fractions:
100/60 + 168/60 = 100 + 168/60 = 268/60 - 268/60 simplified gives 67/15
- So, 20/12 + 42/15 = 67/15
In mixed form: 47/15
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