Add 81/12 and 45/40
1st number: 6 9/12, 2nd number: 1 5/40
81/12 + 45/40 is 63/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 12 × 10 = 120,
81/12 = 81 × 10/12 × 10 = 810/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
45/40 = 45 × 3/40 × 3 = 135/120 - Add the two like fractions:
810/120 + 135/120 = 810 + 135/120 = 945/120 - 945/120 simplified gives 63/8
- So, 81/12 + 45/40 = 63/8
In mixed form: 77/8
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