Add 21/20 and 9/28
1st number: 1 1/20, 2nd number: 9/28
21/20 + 9/28 is 48/35.
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,
21/20 = 21 × 7/20 × 7 = 147/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
9/28 = 9 × 5/28 × 5 = 45/140 - Add the two like fractions:
147/140 + 45/140 = 147 + 45/140 = 192/140 - 192/140 simplified gives 48/35
- So, 21/20 + 9/28 = 48/35
In mixed form: 113/35
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