Add 15/80 and 21/15
1st number: 15/80, 2nd number: 1 6/15
15/80 + 21/15 is 127/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 15 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 80 × 3 = 240,
15/80 = 15 × 3/80 × 3 = 45/240 - Likewise, for the 2nd fraction, since 15 × 16 = 240,
21/15 = 21 × 16/15 × 16 = 336/240 - Add the two like fractions:
45/240 + 336/240 = 45 + 336/240 = 381/240 - 381/240 simplified gives 127/80
- So, 15/80 + 21/15 = 127/80
In mixed form: 147/80
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