Subtract 1/18 from 21/3
1st number: 7 0/3, 2nd number: 1/18
21/3 - 1/18 is 125/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 3 × 6 = 18,
21/3 = 21 × 6/3 × 6 = 126/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
1/18 = 1 × 1/18 × 1 = 1/18 - Subtract the two like fractions:
126/18 - 1/18 = 126 - 1/18 = 125/18 - In mixed form: 617/18
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