Add 90/12 and 21/35
1st number: 7 6/12, 2nd number: 21/35
90/12 + 21/35 is 81/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 35 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
90/12 = 90 × 35/12 × 35 = 3150/420 - Likewise, for the 2nd fraction, since 35 × 12 = 420,
21/35 = 21 × 12/35 × 12 = 252/420 - Add the two like fractions:
3150/420 + 252/420 = 3150 + 252/420 = 3402/420 - 3402/420 simplified gives 81/10
- So, 90/12 + 21/35 = 81/10
In mixed form: 81/10
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