Add 28/20 and 45/28
1st number: 1 8/20, 2nd number: 1 17/28
28/20 + 45/28 is 421/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
28/20 = 28 × 7/20 × 7 = 196/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
45/28 = 45 × 5/28 × 5 = 225/140 - Add the two like fractions:
196/140 + 225/140 = 196 + 225/140 = 421/140 - So, 28/20 + 45/28 = 421/140
In mixed form: 31/140
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