Add 21/2 and 28/40
1st number: 10 1/2, 2nd number: 28/40
21/2 + 28/40 is 56/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 2 × 20 = 40,
21/2 = 21 × 20/2 × 20 = 420/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
28/40 = 28 × 1/40 × 1 = 28/40 - Add the two like fractions:
420/40 + 28/40 = 420 + 28/40 = 448/40 - 448/40 simplified gives 56/5
- So, 21/2 + 28/40 = 56/5
In mixed form: 111/5
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