Subtract 9/40 from 5/21
521 - 940 is 11840.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 21 × 40 = 840,
521 = 5 × 4021 × 40 = 200840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
940 = 9 × 2140 × 21 = 189840 - Subtract the two like fractions:
200840 - 189840 = 200 - 189840 = 11840
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