Subtract 54/12 from 12/40
1st number: 12/40, 2nd number: 4 6/12
12/40 - 54/12 is -21/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 12 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
12/40 = 12 × 3/40 × 3 = 36/120 - Likewise, for the 2nd fraction, since 12 × 10 = 120,
54/12 = 54 × 10/12 × 10 = 540/120 - Subtract the two like fractions:
36/120 - 540/120 = 36 - 540/120 = -504/120 - After reducing the fraction, the answer is -21/5
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