Subtract 20/15 from 45/18
1st number: 2 9/18, 2nd number: 1 5/15
45/18 - 20/15 is 7/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
45/18 = 45 × 5/18 × 5 = 225/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
20/15 = 20 × 6/15 × 6 = 120/90 - Subtract the two like fractions:
225/90 - 120/90 = 225 - 120/90 = 105/90 - After reducing the fraction, the answer is 7/6
- In mixed form: 11/6
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