Subtract 18/56 from 20/75
20/75 - 18/56 is -23/420.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 56 is 4200
Next, find the equivalent fraction of both fractional numbers with denominator 4200 - For the 1st fraction, since 75 × 56 = 4200,
20/75 = 20 × 56/75 × 56 = 1120/4200 - Likewise, for the 2nd fraction, since 56 × 75 = 4200,
18/56 = 18 × 75/56 × 75 = 1350/4200 - Subtract the two like fractions:
1120/4200 - 1350/4200 = 1120 - 1350/4200 = -230/4200 - After reducing the fraction, the answer is -23/420
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