Add 5/6 and 72/21
1st number: 5/6, 2nd number: 3 9/21
5/6 + 72/21 is 179/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
5/6 = 5 × 7/6 × 7 = 35/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
72/21 = 72 × 2/21 × 2 = 144/42 - Add the two like fractions:
35/42 + 144/42 = 35 + 144/42 = 179/42 - So, 5/6 + 72/21 = 179/42
In mixed form: 411/42
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