Add 81/70 and 30/84
1st number: 1 11/70, 2nd number: 30/84
81/70 + 30/84 is 53/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
81/70 = 81 × 6/70 × 6 = 486/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
30/84 = 30 × 5/84 × 5 = 150/420 - Add the two like fractions:
486/420 + 150/420 = 486 + 150/420 = 636/420 - 636/420 simplified gives 53/35
- So, 81/70 + 30/84 = 53/35
In mixed form: 118/35
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