Add 81/7 and 18/60
1st number: 11 4/7, 2nd number: 18/60
81/7 + 18/60 is 831/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 7 × 60 = 420,
81/7 = 81 × 60/7 × 60 = 4860/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
18/60 = 18 × 7/60 × 7 = 126/420 - Add the two like fractions:
4860/420 + 126/420 = 4860 + 126/420 = 4986/420 - 4986/420 simplified gives 831/70
- So, 81/7 + 18/60 = 831/70
In mixed form: 1161/70
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