Subtract 42/25 from 30/20
1st number: 1 10/20, 2nd number: 1 17/25
30/20 - 42/25 is -9/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 25 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 20 × 5 = 100,
30/20 = 30 × 5/20 × 5 = 150/100 - Likewise, for the 2nd fraction, since 25 × 4 = 100,
42/25 = 42 × 4/25 × 4 = 168/100 - Subtract the two like fractions:
150/100 - 168/100 = 150 - 168/100 = -18/100 - After reducing the fraction, the answer is -9/50
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