Add 81/4 and 45/20
1st number: 20 1/4, 2nd number: 2 5/20
81/4 + 45/20 is 45/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
81/4 = 81 × 5/4 × 5 = 405/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
45/20 = 45 × 1/20 × 1 = 45/20 - Add the two like fractions:
405/20 + 45/20 = 405 + 45/20 = 450/20 - 450/20 simplified gives 45/2
- So, 81/4 + 45/20 = 45/2
In mixed form: 221/2
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