Subtract 1/18 from 20/72
20/72 - 1/18 is 2/9.
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,
20/72 = 20 × 1/72 × 1 = 20/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
1/18 = 1 × 4/18 × 4 = 4/72 - Subtract the two like fractions:
20/72 - 4/72 = 20 - 4/72 = 16/72 - After reducing the fraction, the answer is 2/9
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