Subtract 63/20 from 54/18
1st number: 3 0/18, 2nd number: 3 3/20
54/18 - 63/20 is -3/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 18 × 10 = 180,
54/18 = 54 × 10/18 × 10 = 540/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
63/20 = 63 × 9/20 × 9 = 567/180 - Subtract the two like fractions:
540/180 - 567/180 = 540 - 567/180 = -27/180 - After reducing the fraction, the answer is -3/20
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