Add 15/12 and 9/28, Solve 1 3/12 + 9/28 as a fraction

Add 15/12 and 9/28

1^st number: 1 3/12, 2^nd number: 9/28

15/12 + 9/28 is 11/7.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 28 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 12 × 7 = 84,
15/12 = 15 × 7/12 × 7 = 105/84
Likewise, for the 2nd fraction, since 28 × 3 = 84,
9/28 = 9 × 3/28 × 3 = 27/84
Add the two like fractions:
105/84 + 27/84 = 105 + 27/84 = 132/84
132/84 simplified gives 11/7
So, 15/12 + 9/28 = 11/7
In mixed form: 14/7

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