Add 72/6 and 8/21
1st number: 12 0/6, 2nd number: 8/21
72/6 + 8/21 is 260/21.
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,
72/6 = 72 × 7/6 × 7 = 504/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
8/21 = 8 × 2/21 × 2 = 16/42 - Add the two like fractions:
504/42 + 16/42 = 504 + 16/42 = 520/42 - 520/42 simplified gives 260/21
- So, 72/6 + 8/21 = 260/21
In mixed form: 128/21
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