Add 60/4 and 28/21, Solve 15 0/4 + 1 7/21 as a fraction

Add 60/4 and 28/21

1^st number: 15 0/4, 2^nd number: 1 7/21

60/4 + 28/21 is 49/3.

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 21 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 4 × 21 = 84,
60/4 = 60 × 21/4 × 21 = 1260/84
Likewise, for the 2nd fraction, since 21 × 4 = 84,
28/21 = 28 × 4/21 × 4 = 112/84
Add the two like fractions:
1260/84 + 112/84 = 1260 + 112/84 = 1372/84
1372/84 simplified gives 49/3
So, 60/4 + 28/21 = 49/3
In mixed form: 161/3

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