Subtract 81/36 from 42/8
1st number: 5 2/8, 2nd number: 2 9/36
42/8 - 81/36 is 3/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 36 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
42/8 = 42 × 9/8 × 9 = 378/72 - Likewise, for the 2nd fraction, since 36 × 2 = 72,
81/36 = 81 × 2/36 × 2 = 162/72 - Subtract the two like fractions:
378/72 - 162/72 = 378 - 162/72 = 216/72 - After reducing the fraction, the answer is 3/1
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