Subtract 81/36 from 42/10
1st number: 4 2/10, 2nd number: 2 9/36
42/10 - 81/36 is 39/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 10 × 18 = 180,
42/10 = 42 × 18/10 × 18 = 756/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
81/36 = 81 × 5/36 × 5 = 405/180 - Subtract the two like fractions:
756/180 - 405/180 = 756 - 405/180 = 351/180 - After reducing the fraction, the answer is 39/20
- In mixed form: 119/20
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