Subtract 25/27 from 7/18
7/18 - 25/27 is -29/54.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 27 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 18 × 3 = 54,
7/18 = 7 × 3/18 × 3 = 21/54 - Likewise, for the 2nd fraction, since 27 × 2 = 54,
25/27 = 25 × 2/27 × 2 = 50/54 - Subtract the two like fractions:
21/54 - 50/54 = 21 - 50/54 = -29/54
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