Add 5/4 and 15/80, Solve 1 1/4 + 15/80 as a fraction

Add 5/4 and 15/80

1^st number: 1 1/4, 2^nd number: 15/80

5/4 + 15/80 is 23/16.

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 80 is 80

Next, find the equivalent fraction of both fractional numbers with denominator 80
For the 1st fraction, since 4 × 20 = 80,
5/4 = 5 × 20/4 × 20 = 100/80
Likewise, for the 2nd fraction, since 80 × 1 = 80,
15/80 = 15 × 1/80 × 1 = 15/80
Add the two like fractions:
100/80 + 15/80 = 100 + 15/80 = 115/80
115/80 simplified gives 23/16
So, 5/4 + 15/80 = 23/16
In mixed form: 17/16

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