Subtract 18/36 from 21/10
1st number: 2 1/10, 2nd number: 18/36
21/10 - 18/36 is 8/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 10 × 18 = 180,
21/10 = 21 × 18/10 × 18 = 378/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
18/36 = 18 × 5/36 × 5 = 90/180 - Subtract the two like fractions:
378/180 - 90/180 = 378 - 90/180 = 288/180 - After reducing the fraction, the answer is 8/5
- In mixed form: 13/5
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