Subtract 81/72 from 42/4
1st number: 10 2/4, 2nd number: 1 9/72
42/4 - 81/72 is 75/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 4 × 18 = 72,
42/4 = 42 × 18/4 × 18 = 756/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
81/72 = 81 × 1/72 × 1 = 81/72 - Subtract the two like fractions:
756/72 - 81/72 = 756 - 81/72 = 675/72 - After reducing the fraction, the answer is 75/8
- In mixed form: 93/8
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