Subtract 45/30 from 9/20
1st number: 9/20, 2nd number: 1 15/30
9/20 - 45/30 is -21/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
9/20 = 9 × 3/20 × 3 = 27/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
45/30 = 45 × 2/30 × 2 = 90/60 - Subtract the two like fractions:
27/60 - 90/60 = 27 - 90/60 = -63/60 - After reducing the fraction, the answer is -21/20
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