Subtract 18/72 from 21/6
1st number: 3 3/6, 2nd number: 18/72
21/6 - 18/72 is 13/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 6 × 12 = 72,
21/6 = 21 × 12/6 × 12 = 252/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
18/72 = 18 × 1/72 × 1 = 18/72 - Subtract the two like fractions:
252/72 - 18/72 = 252 - 18/72 = 234/72 - After reducing the fraction, the answer is 13/4
- In mixed form: 31/4
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