Add 21/14 and 30/15
1st number: 1 7/14, 2nd number: 2 0/15
21/14 + 30/15 is 7/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 14 × 15 = 210,
21/14 = 21 × 15/14 × 15 = 315/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
30/15 = 30 × 14/15 × 14 = 420/210 - Add the two like fractions:
315/210 + 420/210 = 315 + 420/210 = 735/210 - 735/210 simplified gives 7/2
- So, 21/14 + 30/15 = 7/2
In mixed form: 31/2
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