Subtract 90/54 from 12/20
1st number: 12/20, 2nd number: 1 36/54
12/20 - 90/54 is -16/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 54 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 20 × 27 = 540,
12/20 = 12 × 27/20 × 27 = 324/540 - Likewise, for the 2nd fraction, since 54 × 10 = 540,
90/54 = 90 × 10/54 × 10 = 900/540 - Subtract the two like fractions:
324/540 - 900/540 = 324 - 900/540 = -576/540 - After reducing the fraction, the answer is -16/15
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