Add 72/6 and 21/84
1st number: 12 0/6, 2nd number: 21/84
72/6 + 21/84 is 49/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 6 × 14 = 84,
72/6 = 72 × 14/6 × 14 = 1008/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
21/84 = 21 × 1/84 × 1 = 21/84 - Add the two like fractions:
1008/84 + 21/84 = 1008 + 21/84 = 1029/84 - 1029/84 simplified gives 49/4
- So, 72/6 + 21/84 = 49/4
In mixed form: 121/4
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