Subtract 27/7 from 18/3
1st number: 6 0/3, 2nd number: 3 6/7
18/3 - 27/7 is 15/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 7 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
18/3 = 18 × 7/3 × 7 = 126/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
27/7 = 27 × 3/7 × 3 = 81/21 - Subtract the two like fractions:
126/21 - 81/21 = 126 - 81/21 = 45/21 - After reducing the fraction, the answer is 15/7
- In mixed form: 21/7
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