Subtract 20/15 from 40/56
1st number: 40/56, 2nd number: 1 5/15
40/56 - 20/15 is -13/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 15 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 56 × 15 = 840,
40/56 = 40 × 15/56 × 15 = 600/840 - Likewise, for the 2nd fraction, since 15 × 56 = 840,
20/15 = 20 × 56/15 × 56 = 1120/840 - Subtract the two like fractions:
600/840 - 1120/840 = 600 - 1120/840 = -520/840 - After reducing the fraction, the answer is -13/21
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