Add 81/2 and 45/20
1st number: 40 1/2, 2nd number: 2 5/20
81/2 + 45/20 is 171/4.
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,
81/2 = 81 × 10/2 × 10 = 810/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
45/20 = 45 × 1/20 × 1 = 45/20 - Add the two like fractions:
810/20 + 45/20 = 810 + 45/20 = 855/20 - 855/20 simplified gives 171/4
- So, 81/2 + 45/20 = 171/4
In mixed form: 423/4
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