Add 27/80 and 84/63, Solve 27/80 + 1 21/63 as a fraction

Add 27/80 and 84/63

1^st number: 27/80, 2^nd number: 1 21/63

27/80 + 84/63 is 401/240.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 63 is 5040

Next, find the equivalent fraction of both fractional numbers with denominator 5040
For the 1st fraction, since 80 × 63 = 5040,
27/80 = 27 × 63/80 × 63 = 1701/5040
Likewise, for the 2nd fraction, since 63 × 80 = 5040,
84/63 = 84 × 80/63 × 80 = 6720/5040
Add the two like fractions:
1701/5040 + 6720/5040 = 1701 + 6720/5040 = 8421/5040
8421/5040 simplified gives 401/240
So, 27/80 + 84/63 = 401/240
In mixed form: 1161/240

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