Add 84/63 and 81/60, Solve 1 21/63 + 1 21/60 as a fraction

Add 84/63 and 81/60

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

84/63 + 81/60 is 161/60.

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,
84/63 = 84 × 20/63 × 20 = 1680/1260
Likewise, for the 2nd fraction, since 60 × 21 = 1260,
81/60 = 81 × 21/60 × 21 = 1701/1260
Add the two like fractions:
1680/1260 + 1701/1260 = 1680 + 1701/1260 = 3381/1260
3381/1260 simplified gives 161/60
So, 84/63 + 81/60 = 161/60
In mixed form: 241/60

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