Subtract 12/54 from 7/72
7/72 - 12/54 is -1/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 54 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 72 × 3 = 216,
7/72 = 7 × 3/72 × 3 = 21/216 - Likewise, for the 2nd fraction, since 54 × 4 = 216,
12/54 = 12 × 4/54 × 4 = 48/216 - Subtract the two like fractions:
21/216 - 48/216 = 21 - 48/216 = -27/216 - After reducing the fraction, the answer is -1/8
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