Add 72/21 and 2/6
1st number: 3 9/21, 2nd number: 2/6
72/21 + 2/6 is 79/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 6 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
72/21 = 72 × 2/21 × 2 = 144/42 - Likewise, for the 2nd fraction, since 6 × 7 = 42,
2/6 = 2 × 7/6 × 7 = 14/42 - Add the two like fractions:
144/42 + 14/42 = 144 + 14/42 = 158/42 - 158/42 simplified gives 79/21
- So, 72/21 + 2/6 = 79/21
In mixed form: 316/21
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