Subtract 21/14 from 42/8
1st number: 5 2/8, 2nd number: 1 7/14
42/8 - 21/14 is 15/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 14 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 8 × 7 = 56,
42/8 = 42 × 7/8 × 7 = 294/56 - Likewise, for the 2nd fraction, since 14 × 4 = 56,
21/14 = 21 × 4/14 × 4 = 84/56 - Subtract the two like fractions:
294/56 - 84/56 = 294 - 84/56 = 210/56 - After reducing the fraction, the answer is 15/4
- In mixed form: 33/4
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