Subtract 42/48 from 21/8
1st number: 2 5/8, 2nd number: 42/48
21/8 - 42/48 is 7/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 48 is 48
Next, find the equivalent fraction of both fractional numbers with denominator 48 - For the 1st fraction, since 8 × 6 = 48,
21/8 = 21 × 6/8 × 6 = 126/48 - Likewise, for the 2nd fraction, since 48 × 1 = 48,
42/48 = 42 × 1/48 × 1 = 42/48 - Subtract the two like fractions:
126/48 - 42/48 = 126 - 42/48 = 84/48 - After reducing the fraction, the answer is 7/4
- In mixed form: 13/4
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