Subtract 21/8 from 42/50
1st number: 42/50, 2nd number: 2 5/8
42/50 - 21/8 is -357/200.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 8 is 200
Next, find the equivalent fraction of both fractional numbers with denominator 200 - For the 1st fraction, since 50 × 4 = 200,
42/50 = 42 × 4/50 × 4 = 168/200 - Likewise, for the 2nd fraction, since 8 × 25 = 200,
21/8 = 21 × 25/8 × 25 = 525/200 - Subtract the two like fractions:
168/200 - 525/200 = 168 - 525/200 = -357/200
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