Subtract 42/20 from 63/36
1st number: 1 27/36, 2nd number: 2 2/20
63/36 - 42/20 is -7/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
63/36 = 63 × 5/36 × 5 = 315/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
42/20 = 42 × 9/20 × 9 = 378/180 - Subtract the two like fractions:
315/180 - 378/180 = 315 - 378/180 = -63/180 - After reducing the fraction, the answer is -7/20
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