Subtract 42/54 from 40/75
40/75 - 42/54 is -11/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 54 is 1350
Next, find the equivalent fraction of both fractional numbers with denominator 1350 - For the 1st fraction, since 75 × 18 = 1350,
40/75 = 40 × 18/75 × 18 = 720/1350 - Likewise, for the 2nd fraction, since 54 × 25 = 1350,
42/54 = 42 × 25/54 × 25 = 1050/1350 - Subtract the two like fractions:
720/1350 - 1050/1350 = 720 - 1050/1350 = -330/1350 - After reducing the fraction, the answer is -11/45
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