Add 12/84 and 81/30
1st number: 12/84, 2nd number: 2 21/30
12/84 + 81/30 is 199/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 30 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
12/84 = 12 × 5/84 × 5 = 60/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
81/30 = 81 × 14/30 × 14 = 1134/420 - Add the two like fractions:
60/420 + 1134/420 = 60 + 1134/420 = 1194/420 - 1194/420 simplified gives 199/70
- So, 12/84 + 81/30 = 199/70
In mixed form: 259/70
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