Add 42/12 and 81/70
1st number: 3 6/12, 2nd number: 1 11/70
42/12 + 81/70 is 163/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
42/12 = 42 × 35/12 × 35 = 1470/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
81/70 = 81 × 6/70 × 6 = 486/420 - Add the two like fractions:
1470/420 + 486/420 = 1470 + 486/420 = 1956/420 - 1956/420 simplified gives 163/35
- So, 42/12 + 81/70 = 163/35
In mixed form: 423/35
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