Subtract 15/54 from 90/20
1st number: 4 10/20, 2nd number: 15/54
90/20 - 15/54 is 38/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 54 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 20 × 27 = 540,
90/20 = 90 × 27/20 × 27 = 2430/540 - Likewise, for the 2nd fraction, since 54 × 10 = 540,
15/54 = 15 × 10/54 × 10 = 150/540 - Subtract the two like fractions:
2430/540 - 150/540 = 2430 - 150/540 = 2280/540 - After reducing the fraction, the answer is 38/9
- In mixed form: 42/9
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