Add 12/30 and 81/84
12/30 + 81/84 is 191/140.
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,
12/30 = 12 × 14/30 × 14 = 168/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
81/84 = 81 × 5/84 × 5 = 405/420 - Add the two like fractions:
168/420 + 405/420 = 168 + 405/420 = 573/420 - 573/420 simplified gives 191/140
- So, 12/30 + 81/84 = 191/140
In mixed form: 151/140
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