Add 20/15 and 21/14
1st number: 1 5/15, 2nd number: 1 7/14
20/15 + 21/14 is 17/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 14 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
20/15 = 20 × 14/15 × 14 = 280/210 - Likewise, for the 2nd fraction, since 14 × 15 = 210,
21/14 = 21 × 15/14 × 15 = 315/210 - Add the two like fractions:
280/210 + 315/210 = 280 + 315/210 = 595/210 - 595/210 simplified gives 17/6
- So, 20/15 + 21/14 = 17/6
In mixed form: 25/6
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