Add 63/21 and 20/80
1st number: 3 0/21, 2nd number: 20/80
63/21 + 20/80 is 13/4.
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,
20/80 = 20 × 21/80 × 21 = 420/1680 - Add the two like fractions:
5040/1680 + 420/1680 = 5040 + 420/1680 = 5460/1680 - 5460/1680 simplified gives 13/4
- So, 63/21 + 20/80 = 13/4
In mixed form: 31/4
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