Subtract 81/15 from 63/45
1st number: 1 18/45, 2nd number: 5 6/15
63/45 - 81/15 is -4/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 15 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 45 × 1 = 45,
63/45 = 63 × 1/45 × 1 = 63/45 - Likewise, for the 2nd fraction, since 15 × 3 = 45,
81/15 = 81 × 3/15 × 3 = 243/45 - Subtract the two like fractions:
63/45 - 243/45 = 63 - 243/45 = -180/45 - After reducing the fraction, the answer is -4/1
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