Add 81/12 and 45/20
1st number: 6 9/12, 2nd number: 2 5/20
81/12 + 45/20 is 9/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
81/12 = 81 × 5/12 × 5 = 405/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
45/20 = 45 × 3/20 × 3 = 135/60 - Add the two like fractions:
405/60 + 135/60 = 405 + 135/60 = 540/60 - 540/60 simplified gives 9/1
- So, 81/12 + 45/20 = 9/1
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