Subtract 40/56 from 5/15
5/15 - 40/56 is -8/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 56 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 15 × 56 = 840,
5/15 = 5 × 56/15 × 56 = 280/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
40/56 = 40 × 15/56 × 15 = 600/840 - Subtract the two like fractions:
280/840 - 600/840 = 280 - 600/840 = -320/840 - After reducing the fraction, the answer is -8/21
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