Subtract 18/10 from 90/20
1st number: 4 10/20, 2nd number: 1 8/10
90/20 - 18/10 is 27/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 10 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
90/20 = 90 × 1/20 × 1 = 90/20 - Likewise, for the 2nd fraction, since 10 × 2 = 20,
18/10 = 18 × 2/10 × 2 = 36/20 - Subtract the two like fractions:
90/20 - 36/20 = 90 - 36/20 = 54/20 - After reducing the fraction, the answer is 27/10
- In mixed form: 27/10
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