Add 20/30 and 12/84
20/30 + 12/84 is 17/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 84 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 84 × 5 = 420,
12/84 = 12 × 5/84 × 5 = 60/420 - Add the two like fractions:
280/420 + 60/420 = 280 + 60/420 = 340/420 - 340/420 simplified gives 17/21
- So, 20/30 + 12/84 = 17/21
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