Subtract 21/8 from 42/25
1st number: 1 17/25, 2nd number: 2 5/8
42/25 - 21/8 is -189/200.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 8 is 200
Next, find the equivalent fraction of both fractional numbers with denominator 200 - For the 1st fraction, since 25 × 8 = 200,
42/25 = 42 × 8/25 × 8 = 336/200 - Likewise, for the 2nd fraction, since 8 × 25 = 200,
21/8 = 21 × 25/8 × 25 = 525/200 - Subtract the two like fractions:
336/200 - 525/200 = 336 - 525/200 = -189/200
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