Add 10/15 and 21/12, Solve 10/15 + 1 9/12 as a fraction

Add 10/15 and 21/12

1^st number: 10/15, 2^nd number: 1 9/12

10/15 + 21/12 is 29/12.

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,
10/15 = 10 × 4/15 × 4 = 40/60
Likewise, for the 2nd fraction, since 12 × 5 = 60,
21/12 = 21 × 5/12 × 5 = 105/60
Add the two like fractions:
40/60 + 105/60 = 40 + 105/60 = 145/60
145/60 simplified gives 29/12
So, 10/15 + 21/12 = 29/12
In mixed form: 25/12

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