Add 28/80 and 21/10
1st number: 28/80, 2nd number: 2 1/10
28/80 + 21/10 is 49/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 10 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
28/80 = 28 × 1/80 × 1 = 28/80 - Likewise, for the 2nd fraction, since 10 × 8 = 80,
21/10 = 21 × 8/10 × 8 = 168/80 - Add the two like fractions:
28/80 + 168/80 = 28 + 168/80 = 196/80 - 196/80 simplified gives 49/20
- So, 28/80 + 21/10 = 49/20
In mixed form: 29/20
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