Add 21/15 and 3/80, Solve 1 6/15 + 3/80 as a fraction

Add 21/15 and 3/80

1^st number: 1 6/15, 2^nd number: 3/80

21/15 + 3/80 is 23/16.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 80 is 240

Next, find the equivalent fraction of both fractional numbers with denominator 240
For the 1st fraction, since 15 × 16 = 240,
21/15 = 21 × 16/15 × 16 = 336/240
Likewise, for the 2nd fraction, since 80 × 3 = 240,
3/80 = 3 × 3/80 × 3 = 9/240
Add the two like fractions:
336/240 + 9/240 = 336 + 9/240 = 345/240
345/240 simplified gives 23/16
So, 21/15 + 3/80 = 23/16
In mixed form: 17/16

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