Add 4/21 and 5/12
4/21 + 5/12 is 17/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
4/21 = 4 × 4/21 × 4 = 16/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
5/12 = 5 × 7/12 × 7 = 35/84 - Add the two like fractions:
16/84 + 35/84 = 16 + 35/84 = 51/84 - 51/84 simplified gives 17/28
- So, 4/21 + 5/12 = 17/28
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