Subtract 54/36 from 20/28
1st number: 20/28, 2nd number: 1 18/36
20/28 - 54/36 is -11/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
20/28 = 20 × 9/28 × 9 = 180/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
54/36 = 54 × 7/36 × 7 = 378/252 - Subtract the two like fractions:
180/252 - 378/252 = 180 - 378/252 = -198/252 - After reducing the fraction, the answer is -11/14
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