Subtract 12/40 from 5/28
5/28 - 12/40 is -17/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 28 × 10 = 280,
5/28 = 5 × 10/28 × 10 = 50/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
12/40 = 12 × 7/40 × 7 = 84/280 - Subtract the two like fractions:
50/280 - 84/280 = 50 - 84/280 = -34/280 - After reducing the fraction, the answer is -17/140
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