Add 12/20 and 30/84
12/20 + 30/84 is 67/70.
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,
30/84 = 30 × 5/84 × 5 = 150/420 - Add the two like fractions:
252/420 + 150/420 = 252 + 150/420 = 402/420 - 402/420 simplified gives 67/70
- So, 12/20 + 30/84 = 67/70
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