Add 15/12 and 81/80, Solve 1 3/12 + 1 1/80 as a fraction

Add 15/12 and 81/80

1^st number: 1 3/12, 2^nd number: 1 1/80

15/12 + 81/80 is 181/80.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 80 is 240

Next, find the equivalent fraction of both fractional numbers with denominator 240
For the 1st fraction, since 12 × 20 = 240,
15/12 = 15 × 20/12 × 20 = 300/240
Likewise, for the 2nd fraction, since 80 × 3 = 240,
81/80 = 81 × 3/80 × 3 = 243/240
Add the two like fractions:
300/240 + 243/240 = 300 + 243/240 = 543/240
543/240 simplified gives 181/80
So, 15/12 + 81/80 = 181/80
In mixed form: 221/80

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