Subtract 27/8 from 42/7
1st number: 6 0/7, 2nd number: 3 3/8
42/7 - 27/8 is 21/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 7 × 8 = 56,
42/7 = 42 × 8/7 × 8 = 336/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
27/8 = 27 × 7/8 × 7 = 189/56 - Subtract the two like fractions:
336/56 - 189/56 = 336 - 189/56 = 147/56 - After reducing the fraction, the answer is 21/8
- In mixed form: 25/8
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