Add 28/12 and 8/21
1st number: 2 4/12, 2nd number: 8/21
28/12 + 8/21 is 19/7.
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,
28/12 = 28 × 7/12 × 7 = 196/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
8/21 = 8 × 4/21 × 4 = 32/84 - Add the two like fractions:
196/84 + 32/84 = 196 + 32/84 = 228/84 - 228/84 simplified gives 19/7
- So, 28/12 + 8/21 = 19/7
In mixed form: 25/7
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