Add 21/2 and 21/7
1st number: 10 1/2, 2nd number: 3 0/7
21/2 + 21/7 is 27/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 7 is 14
Next, find the equivalent fraction of both fractional numbers with denominator 14 - For the 1st fraction, since 2 × 7 = 14,
21/2 = 21 × 7/2 × 7 = 147/14 - Likewise, for the 2nd fraction, since 7 × 2 = 14,
21/7 = 21 × 2/7 × 2 = 42/14 - Add the two like fractions:
147/14 + 42/14 = 147 + 42/14 = 189/14 - 189/14 simplified gives 27/2
- So, 21/2 + 21/7 = 27/2
In mixed form: 131/2
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