Add 20/28 and 21/5
1st number: 20/28, 2nd number: 4 1/5
20/28 + 21/5 is 172/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 5 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
20/28 = 20 × 5/28 × 5 = 100/140 - Likewise, for the 2nd fraction, since 5 × 28 = 140,
21/5 = 21 × 28/5 × 28 = 588/140 - Add the two like fractions:
100/140 + 588/140 = 100 + 588/140 = 688/140 - 688/140 simplified gives 172/35
- So, 20/28 + 21/5 = 172/35
In mixed form: 432/35
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