Solutions by everydaycalculation.com

1^{st} number: 12/15, 2^{nd} number: 1 4/8

1215 + 128 is 2310.

- Find the least common denominator or LCM of the two denominators:

LCM of 15 and 8 is**120** - For the 1st fraction, since 15 × 8 = 120,

1215 = 12 × 815 × 8 = 96120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,

128 = 12 × 158 × 15 = 180120 - Add the two fractions:

96120 + 180120 = 96 + 180120 = 276120 - After reducing the fraction, the answer is 2310
- In mixed form: 2310

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