Answers

Subtract 70/7 from 20/40

1^st number: 20/40, 2^nd number: 10 0/7

20/40 - 70/7 is -19/2.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 7 is 280
   
   Next, find the equivalent fraction of both fractional numbers with denominator 280
2. For the 1st fraction, since 40 × 7 = 280,
   20/40 = 20 × 7/40 × 7 = 140/280
3. Likewise, for the 2nd fraction, since 7 × 40 = 280,
   70/7 = 70 × 40/7 × 40 = 2800/280
4. Subtract the two like fractions:
   140/280 - 2800/280 = 140 - 2800/280 = -2660/280
5. After reducing the fraction, the answer is -19/2

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