Add 90/6 and 21/60, Solve 15 0/6 + 21/60 as a fraction

Add 90/6 and 21/60

1^st number: 15 0/6, 2^nd number: 21/60

90/6 + 21/60 is 307/20.

Find the least common denominator or LCM of the two denominators:
LCM of 6 and 60 is 60

Next, find the equivalent fraction of both fractional numbers with denominator 60
For the 1st fraction, since 6 × 10 = 60,
90/6 = 90 × 10/6 × 10 = 900/60
Likewise, for the 2nd fraction, since 60 × 1 = 60,
21/60 = 21 × 1/60 × 1 = 21/60
Add the two like fractions:
900/60 + 21/60 = 900 + 21/60 = 921/60
921/60 simplified gives 307/20
So, 90/6 + 21/60 = 307/20
In mixed form: 157/20

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