Add 63/35 and 21/12
1st number: 1 28/35, 2nd number: 1 9/12
63/35 + 21/12 is 71/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 12 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 35 × 12 = 420,
63/35 = 63 × 12/35 × 12 = 756/420 - Likewise, for the 2nd fraction, since 12 × 35 = 420,
21/12 = 21 × 35/12 × 35 = 735/420 - Add the two like fractions:
756/420 + 735/420 = 756 + 735/420 = 1491/420 - 1491/420 simplified gives 71/20
- So, 63/35 + 21/12 = 71/20
In mixed form: 311/20
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