Subtract 8/20 from 42/25
1st number: 1 17/25, 2nd number: 8/20
42/25 - 8/20 is 32/25.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 20 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 25 × 4 = 100,
42/25 = 42 × 4/25 × 4 = 168/100 - Likewise, for the 2nd fraction, since 20 × 5 = 100,
8/20 = 8 × 5/20 × 5 = 40/100 - Subtract the two like fractions:
168/100 - 40/100 = 168 - 40/100 = 128/100 - After reducing the fraction, the answer is 32/25
- In mixed form: 17/25
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