Add 9/5 and 21/28
1st number: 1 4/5, 2nd number: 21/28
9/5 + 21/28 is 51/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 5 × 28 = 140,
9/5 = 9 × 28/5 × 28 = 252/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
21/28 = 21 × 5/28 × 5 = 105/140 - Add the two like fractions:
252/140 + 105/140 = 252 + 105/140 = 357/140 - 357/140 simplified gives 51/20
- So, 9/5 + 21/28 = 51/20
In mixed form: 211/20
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