Subtract 7/42 from 81/36
1st number: 2 9/36, 2nd number: 7/42
81/36 - 7/42 is 25/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 42 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
81/36 = 81 × 7/36 × 7 = 567/252 - Likewise, for the 2nd fraction, since 42 × 6 = 252,
7/42 = 7 × 6/42 × 6 = 42/252 - Subtract the two like fractions:
567/252 - 42/252 = 567 - 42/252 = 525/252 - After reducing the fraction, the answer is 25/12
- In mixed form: 21/12
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