Add 3/21 and 72/6
1st number: 3/21, 2nd number: 12 0/6
3/21 + 72/6 is 85/7.
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,
3/21 = 3 × 2/21 × 2 = 6/42 - Likewise, for the 2nd fraction, since 6 × 7 = 42,
72/6 = 72 × 7/6 × 7 = 504/42 - Add the two like fractions:
6/42 + 504/42 = 6 + 504/42 = 510/42 - 510/42 simplified gives 85/7
- So, 3/21 + 72/6 = 85/7
In mixed form: 121/7
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