Add 21/4 and 28/35
1st number: 5 1/4, 2nd number: 28/35
21/4 + 28/35 is 121/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 35 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 4 × 35 = 140,
21/4 = 21 × 35/4 × 35 = 735/140 - Likewise, for the 2nd fraction, since 35 × 4 = 140,
28/35 = 28 × 4/35 × 4 = 112/140 - Add the two like fractions:
735/140 + 112/140 = 735 + 112/140 = 847/140 - 847/140 simplified gives 121/20
- So, 21/4 + 28/35 = 121/20
In mixed form: 61/20
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