Subtract 40/30 from 81/18
1st number: 4 9/18, 2nd number: 1 10/30
81/18 - 40/30 is 19/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
81/18 = 81 × 5/18 × 5 = 405/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
40/30 = 40 × 3/30 × 3 = 120/90 - Subtract the two like fractions:
405/90 - 120/90 = 405 - 120/90 = 285/90 - After reducing the fraction, the answer is 19/6
- In mixed form: 31/6
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