Add 10/12 and 28/21
1st number: 10/12, 2nd number: 1 7/21
10/12 + 28/21 is 13/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
10/12 = 10 × 7/12 × 7 = 70/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
28/21 = 28 × 4/21 × 4 = 112/84 - Add the two like fractions:
70/84 + 112/84 = 70 + 112/84 = 182/84 - 182/84 simplified gives 13/6
- So, 10/12 + 28/21 = 13/6
In mixed form: 21/6
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