Subtract 63/20 from 54/90
1st number: 54/90, 2nd number: 3 3/20
54/90 - 63/20 is -51/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
54/90 = 54 × 2/90 × 2 = 108/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
63/20 = 63 × 9/20 × 9 = 567/180 - Subtract the two like fractions:
108/180 - 567/180 = 108 - 567/180 = -459/180 - After reducing the fraction, the answer is -51/20
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