Subtract 21/5 from 42/50
1st number: 42/50, 2nd number: 4 1/5
42/50 - 21/5 is -84/25.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 5 is 50
Next, find the equivalent fraction of both fractional numbers with denominator 50 - For the 1st fraction, since 50 × 1 = 50,
42/50 = 42 × 1/50 × 1 = 42/50 - Likewise, for the 2nd fraction, since 5 × 10 = 50,
21/5 = 21 × 10/5 × 10 = 210/50 - Subtract the two like fractions:
42/50 - 210/50 = 42 - 210/50 = -168/50 - After reducing the fraction, the answer is -84/25
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