Subtract 40/81 from 12/5
1st number: 2 2/5, 2nd number: 40/81
12/5 - 40/81 is 772/405.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 81 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 5 × 81 = 405,
12/5 = 12 × 81/5 × 81 = 972/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
40/81 = 40 × 5/81 × 5 = 200/405 - Subtract the two like fractions:
972/405 - 200/405 = 972 - 200/405 = 772/405 - In mixed form: 1367/405
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