Subtract 45/36 from 18/20
1st number: 18/20, 2nd number: 1 9/36
18/20 - 45/36 is -7/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
18/20 = 18 × 9/20 × 9 = 162/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
45/36 = 45 × 5/36 × 5 = 225/180 - Subtract the two like fractions:
162/180 - 225/180 = 162 - 225/180 = -63/180 - After reducing the fraction, the answer is -7/20
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