Add 81/70 and 90/12
1st number: 1 11/70, 2nd number: 7 6/12
81/70 + 90/12 is 303/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 12 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 12 × 35 = 420,
90/12 = 90 × 35/12 × 35 = 3150/420 - Add the two like fractions:
486/420 + 3150/420 = 486 + 3150/420 = 3636/420 - 3636/420 simplified gives 303/35
- So, 81/70 + 90/12 = 303/35
In mixed form: 823/35
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