Add 63/21 and 84/80
1st number: 3 0/21, 2nd number: 1 4/80
63/21 + 84/80 is 81/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 21 × 80 = 1680,
63/21 = 63 × 80/21 × 80 = 5040/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
84/80 = 84 × 21/80 × 21 = 1764/1680 - Add the two like fractions:
5040/1680 + 1764/1680 = 5040 + 1764/1680 = 6804/1680 - 6804/1680 simplified gives 81/20
- So, 63/21 + 84/80 = 81/20
In mixed form: 41/20
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