Add 21/72 and 35/21
1st number: 21/72, 2nd number: 1 14/21
21/72 + 35/21 is 47/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 21 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
21/72 = 21 × 7/72 × 7 = 147/504 - Likewise, for the 2nd fraction, since 21 × 24 = 504,
35/21 = 35 × 24/21 × 24 = 840/504 - Add the two like fractions:
147/504 + 840/504 = 147 + 840/504 = 987/504 - 987/504 simplified gives 47/24
- So, 21/72 + 35/21 = 47/24
In mixed form: 123/24
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