Add 6/15 and 21/12, Solve 6/15 + 1 9/12 as a fraction

Add 6/15 and 21/12

1^st number: 6/15, 2^nd number: 1 9/12

6/15 + 21/12 is 43/20.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 12 is 60

Next, find the equivalent fraction of both fractional numbers with denominator 60
For the 1st fraction, since 15 × 4 = 60,
6/15 = 6 × 4/15 × 4 = 24/60
Likewise, for the 2nd fraction, since 12 × 5 = 60,
21/12 = 21 × 5/12 × 5 = 105/60
Add the two like fractions:
24/60 + 105/60 = 24 + 105/60 = 129/60
129/60 simplified gives 43/20
So, 6/15 + 21/12 = 43/20
In mixed form: 23/20

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