Add 81/12 and 70/20
1st number: 6 9/12, 2nd number: 3 10/20
81/12 + 70/20 is 41/4.
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,
70/20 = 70 × 3/20 × 3 = 210/60 - Add the two like fractions:
405/60 + 210/60 = 405 + 210/60 = 615/60 - 615/60 simplified gives 41/4
- So, 81/12 + 70/20 = 41/4
In mixed form: 101/4
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