Subtract 81/63 from 20/5
1st number: 4 0/5, 2nd number: 1 18/63
20/5 - 81/63 is 19/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 5 × 63 = 315,
20/5 = 20 × 63/5 × 63 = 1260/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
81/63 = 81 × 5/63 × 5 = 405/315 - Subtract the two like fractions:
1260/315 - 405/315 = 1260 - 405/315 = 855/315 - After reducing the fraction, the answer is 19/7
- In mixed form: 25/7
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