Add 21/5 and 63/28
1st number: 4 1/5, 2nd number: 2 7/28
21/5 + 63/28 is 129/20.
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,
21/5 = 21 × 28/5 × 28 = 588/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
63/28 = 63 × 5/28 × 5 = 315/140 - Add the two like fractions:
588/140 + 315/140 = 588 + 315/140 = 903/140 - 903/140 simplified gives 129/20
- So, 21/5 + 63/28 = 129/20
In mixed form: 69/20
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