Add 21/15 and 3/30
1st number: 1 6/15, 2nd number: 3/30
21/15 + 3/30 is 3/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 15 × 2 = 30,
21/15 = 21 × 2/15 × 2 = 42/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
3/30 = 3 × 1/30 × 1 = 3/30 - Add the two like fractions:
42/30 + 3/30 = 42 + 3/30 = 45/30 - 45/30 simplified gives 3/2
- So, 21/15 + 3/30 = 3/2
In mixed form: 11/2
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