Subtract 20/18 from 75/72
1st number: 1 3/72, 2nd number: 1 2/18
75/72 - 20/18 is -5/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 18 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
75/72 = 75 × 1/72 × 1 = 75/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
20/18 = 20 × 4/18 × 4 = 80/72 - Subtract the two like fractions:
75/72 - 80/72 = 75 - 80/72 = -5/72
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