Subtract 27/7 from 42/2
1st number: 21 0/2, 2nd number: 3 6/7
42/2 - 27/7 is 120/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 7 is 14
Next, find the equivalent fraction of both fractional numbers with denominator 14 - For the 1st fraction, since 2 × 7 = 14,
42/2 = 42 × 7/2 × 7 = 294/14 - Likewise, for the 2nd fraction, since 7 × 2 = 14,
27/7 = 27 × 2/7 × 2 = 54/14 - Subtract the two like fractions:
294/14 - 54/14 = 294 - 54/14 = 240/14 - After reducing the fraction, the answer is 120/7
- In mixed form: 171/7
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