Add 15/30 and 21/20
1st number: 15/30, 2nd number: 1 1/20
15/30 + 21/20 is 31/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
15/30 = 15 × 2/30 × 2 = 30/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
21/20 = 21 × 3/20 × 3 = 63/60 - Add the two like fractions:
30/60 + 63/60 = 30 + 63/60 = 93/60 - 93/60 simplified gives 31/20
- So, 15/30 + 21/20 = 31/20
In mixed form: 111/20
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