Add 63/84 and 81/30
1st number: 63/84, 2nd number: 2 21/30
63/84 + 81/30 is 69/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 30 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
63/84 = 63 × 5/84 × 5 = 315/420 - Likewise, for the 2nd fraction, since 30 × 14 = 420,
81/30 = 81 × 14/30 × 14 = 1134/420 - Add the two like fractions:
315/420 + 1134/420 = 315 + 1134/420 = 1449/420 - 1449/420 simplified gives 69/20
- So, 63/84 + 81/30 = 69/20
In mixed form: 39/20
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