Add 21/14 and 20/5
1st number: 1 7/14, 2nd number: 4 0/5
21/14 + 20/5 is 11/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 5 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 14 × 5 = 70,
21/14 = 21 × 5/14 × 5 = 105/70 - Likewise, for the 2nd fraction, since 5 × 14 = 70,
20/5 = 20 × 14/5 × 14 = 280/70 - Add the two like fractions:
105/70 + 280/70 = 105 + 280/70 = 385/70 - 385/70 simplified gives 11/2
- So, 21/14 + 20/5 = 11/2
In mixed form: 51/2
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