Add 12/20 and 28/84
12/20 + 28/84 is 14/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
12/20 = 12 × 21/20 × 21 = 252/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
28/84 = 28 × 5/84 × 5 = 140/420 - Add the two like fractions:
252/420 + 140/420 = 252 + 140/420 = 392/420 - 392/420 simplified gives 14/15
- So, 12/20 + 28/84 = 14/15
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