Subtract 21/45 from 20/2
1st number: 10 0/2, 2nd number: 21/45
20/2 - 21/45 is 143/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 2 × 45 = 90,
20/2 = 20 × 45/2 × 45 = 900/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
21/45 = 21 × 2/45 × 2 = 42/90 - Subtract the two like fractions:
900/90 - 42/90 = 900 - 42/90 = 858/90 - After reducing the fraction, the answer is 143/15
- In mixed form: 98/15
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