Subtract 1/45 from 21/10
1st number: 2 1/10, 2nd number: 1/45
21/10 - 1/45 is 187/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
21/10 = 21 × 9/10 × 9 = 189/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
1/45 = 1 × 2/45 × 2 = 2/90 - Subtract the two like fractions:
189/90 - 2/90 = 189 - 2/90 = 187/90 - In mixed form: 27/90
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