Add 18/15 and 28/80
1st number: 1 3/15, 2nd number: 28/80
18/15 + 28/80 is 31/20.
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,
18/15 = 18 × 16/15 × 16 = 288/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
28/80 = 28 × 3/80 × 3 = 84/240 - Add the two like fractions:
288/240 + 84/240 = 288 + 84/240 = 372/240 - 372/240 simplified gives 31/20
- So, 18/15 + 28/80 = 31/20
In mixed form: 111/20
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