Answers

Subtract 56/84 from 1/40

1/40 - 56/84 is -77/120.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 84 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 40 × 21 = 840,
   1/40 = 1 × 21/40 × 21 = 21/840
3. Likewise, for the 2nd fraction, since 84 × 10 = 840,
   56/84 = 56 × 10/84 × 10 = 560/840
4. Subtract the two like fractions:
   21/840 - 560/840 = 21 - 560/840 = -539/840
5. After reducing the fraction, the answer is -77/120

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