Add 21/15 and 10/80
1st number: 1 6/15, 2nd number: 10/80
21/15 + 10/80 is 61/40.
Steps for adding fractions
- 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,
10/80 = 10 × 3/80 × 3 = 30/240 - Add the two like fractions:
336/240 + 30/240 = 336 + 30/240 = 366/240 - 366/240 simplified gives 61/40
- So, 21/15 + 10/80 = 61/40
In mixed form: 121/40
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