Subtract 54/8 from 12/72
1st number: 12/72, 2nd number: 6 6/8
12/72 - 54/8 is -79/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
12/72 = 12 × 1/72 × 1 = 12/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
54/8 = 54 × 9/8 × 9 = 486/72 - Subtract the two like fractions:
12/72 - 486/72 = 12 - 486/72 = -474/72 - After reducing the fraction, the answer is -79/12
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