Add 20/63 and 81/60, Solve 20/63 + 1 21/60 as a fraction

Add 20/63 and 81/60

1^st number: 20/63, 2^nd number: 1 21/60

20/63 + 81/60 is 2101/1260.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 60 is 1260

Next, find the equivalent fraction of both fractional numbers with denominator 1260
For the 1st fraction, since 63 × 20 = 1260,
20/63 = 20 × 20/63 × 20 = 400/1260
Likewise, for the 2nd fraction, since 60 × 21 = 1260,
81/60 = 81 × 21/60 × 21 = 1701/1260
Add the two like fractions:
400/1260 + 1701/1260 = 400 + 1701/1260 = 2101/1260
So, 20/63 + 81/60 = 2101/1260
In mixed form: 1841/1260

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