Add 42/12 and 81/30
1st number: 3 6/12, 2nd number: 2 21/30
42/12 + 81/30 is 31/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
42/12 = 42 × 5/12 × 5 = 210/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
81/30 = 81 × 2/30 × 2 = 162/60 - Add the two like fractions:
210/60 + 162/60 = 210 + 162/60 = 372/60 - 372/60 simplified gives 31/5
- So, 42/12 + 81/30 = 31/5
In mixed form: 61/5
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