Subtract 3/72 from 20/18
1st number: 1 2/18, 2nd number: 3/72
20/18 - 3/72 is 77/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
20/18 = 20 × 4/18 × 4 = 80/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
3/72 = 3 × 1/72 × 1 = 3/72 - Subtract the two like fractions:
80/72 - 3/72 = 80 - 3/72 = 77/72 - In mixed form: 15/72
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