Add 21/14 and 9/72
1st number: 1 7/14, 2nd number: 9/72
21/14 + 9/72 is 13/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 14 × 36 = 504,
21/14 = 21 × 36/14 × 36 = 756/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
9/72 = 9 × 7/72 × 7 = 63/504 - Add the two like fractions:
756/504 + 63/504 = 756 + 63/504 = 819/504 - 819/504 simplified gives 13/8
- So, 21/14 + 9/72 = 13/8
In mixed form: 15/8
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