Add 20/30 and 12/28
20/30 + 12/28 is 23/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 30 × 14 = 420,
20/30 = 20 × 14/30 × 14 = 280/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
12/28 = 12 × 15/28 × 15 = 180/420 - Add the two like fractions:
280/420 + 180/420 = 280 + 180/420 = 460/420 - 460/420 simplified gives 23/21
- So, 20/30 + 12/28 = 23/21
In mixed form: 12/21
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