Answers

Subtract 20/56 from 12/15

12/15 - 20/56 is 31/70.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 56 is 840
2. For the 1st fraction, since 15 × 56 = 840,
   12/15 = 12 × 56/15 × 56 = 672/840
3. Likewise, for the 2nd fraction, since 56 × 15 = 840,
   20/56 = 20 × 15/56 × 15 = 300/840
4. Subtract the two fractions:
   672/840 - 300/840 = 672 - 300/840 = 372/840
5. After reducing the fraction, the answer is 31/70

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