Subtract 15/63 from 90/20
1st number: 4 10/20, 2nd number: 15/63
90/20 - 15/63 is 179/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 63 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 20 × 63 = 1260,
90/20 = 90 × 63/20 × 63 = 5670/1260 - Likewise, for the 2nd fraction, since 63 × 20 = 1260,
15/63 = 15 × 20/63 × 20 = 300/1260 - Subtract the two like fractions:
5670/1260 - 300/1260 = 5670 - 300/1260 = 5370/1260 - After reducing the fraction, the answer is 179/42
- In mixed form: 411/42
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