Subtract 20/45 from 3/56
3/56 - 20/45 is -197/504.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 45 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 56 × 45 = 2520,
3/56 = 3 × 45/56 × 45 = 135/2520 - Likewise, for the 2nd fraction, since 45 × 56 = 2520,
20/45 = 20 × 56/45 × 56 = 1120/2520 - Subtract the two like fractions:
135/2520 - 1120/2520 = 135 - 1120/2520 = -985/2520 - After reducing the fraction, the answer is -197/504
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