Add 21/2 and 18/20
1st number: 10 1/2, 2nd number: 18/20
21/2 + 18/20 is 57/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 2 × 10 = 20,
21/2 = 21 × 10/2 × 10 = 210/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
18/20 = 18 × 1/20 × 1 = 18/20 - Add the two like fractions:
210/20 + 18/20 = 210 + 18/20 = 228/20 - 228/20 simplified gives 57/5
- So, 21/2 + 18/20 = 57/5
In mixed form: 112/5
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