Add 21/5 and 30/12
1st number: 4 1/5, 2nd number: 2 6/12
21/5 + 30/12 is 67/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 5 × 12 = 60,
21/5 = 21 × 12/5 × 12 = 252/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
30/12 = 30 × 5/12 × 5 = 150/60 - Add the two like fractions:
252/60 + 150/60 = 252 + 150/60 = 402/60 - 402/60 simplified gives 67/10
- So, 21/5 + 30/12 = 67/10
In mixed form: 67/10
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