Add 16/21 and 81/60, Solve 16/21 + 1 21/60 as a fraction

Add 16/21 and 81/60

1^st number: 16/21, 2^nd number: 1 21/60

16/21 + 81/60 is 887/420.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 60 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 21 × 20 = 420,
16/21 = 16 × 20/21 × 20 = 320/420
Likewise, for the 2nd fraction, since 60 × 7 = 420,
81/60 = 81 × 7/60 × 7 = 567/420
Add the two like fractions:
320/420 + 567/420 = 320 + 567/420 = 887/420
So, 16/21 + 81/60 = 887/420
In mixed form: 247/420

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