Subtract 12/14 from 18/40
18/40 - 12/14 is -57/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 14 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
18/40 = 18 × 7/40 × 7 = 126/280 - Likewise, for the 2nd fraction, since 14 × 20 = 280,
12/14 = 12 × 20/14 × 20 = 240/280 - Subtract the two like fractions:
126/280 - 240/280 = 126 - 240/280 = -114/280 - After reducing the fraction, the answer is -57/140
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