Subtract 42/28 from 21/25
1st number: 21/25, 2nd number: 1 14/28
21/25 - 42/28 is -33/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 28 is 700
Next, find the equivalent fraction of both fractional numbers with denominator 700 - For the 1st fraction, since 25 × 28 = 700,
21/25 = 21 × 28/25 × 28 = 588/700 - Likewise, for the 2nd fraction, since 28 × 25 = 700,
42/28 = 42 × 25/28 × 25 = 1050/700 - Subtract the two like fractions:
588/700 - 1050/700 = 588 - 1050/700 = -462/700 - After reducing the fraction, the answer is -33/50
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