Add 21/28 and 5/30
21/28 + 5/30 is 11/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 30 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
21/28 = 21 × 15/28 × 15 = 315/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
5/30 = 5 × 14/30 × 14 = 70/420 - Add the two like fractions:
315/420 + 70/420 = 315 + 70/420 = 385/420 - 385/420 simplified gives 11/12
- So, 21/28 + 5/30 = 11/12
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